datasheet
EEWORLDEEWORLDEEWORLD
Datasheet
Part Number

Keyword

Search
Keyword

Part Number

Search
Datasheet> All Categories > Power/power management> The power supply circuit> TPS2341PHP
PDF
Preview

TPS2341PHP

Description
4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48, POWERPAD, HTQFP-48
CategoryPower/power management    The power supply circuit   
File Size1MB，32 Pages
ManufacturerRochester Electronics
Websitehttps://www.rocelec.com/
Download Datasheet Parametric View All

TPS2341PHP Overview

4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48, POWERPAD, HTQFP-48

TPS2341PHP Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?incompatible
MakerRochester Electronics
Parts packaging codeQFP
package instructionPOWERPAD, HTQFP-48
Contacts48
Reach Compliance Codeunknown
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeS-PQFP-G48
JESD-609 codee4
length7 mm
Humidity sensitivity level3
Number of channels4
Number of functions1
Number of terminals48
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTFQFP
Package shapeSQUARE
Package formFLATPACK, THIN PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)220
Maximum seat height1.2 mm
Maximum supply voltage (Vsup)13.2 V
Minimum supply voltage (Vsup)10.8 V
Nominal supply voltage (Vsup)12 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceNICKEL PALLADIUM GOLD
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width7 mm

TPS2341PHP Preview

D ts e t
aa h e
R c e t r lc r nc
o h se Ee to is
Ma u a t r dCo o e t
n fc u e
mp n n s
R c e tr b a d d c mp n ns ae
o h se rn e
o oet r
ma ua trd u ig ete dewaes
n fcue sn i r i/ fr
h
p rh s d f m te oiia s p l r
uc a e r
o h r n l u pi s
g
e
o R c e tr waes rce td f m
r o h se
fr e rae r
o
te oiia I. Al rce t n ae
h
r nl P
g
l e rai s r
o
d n wi tea p o a o teOC
o e t h p rv l f h
h
M.
P r aetse u igoiia fcoy
at r e td sn r n la tr
s
g
ts p o rmso R c e tr e eo e
e t rga
r o h se d v lp d
ts s lt n t g aa te p o u t
e t oui s o u rne
o
rd c
me t o e c e teOC d t s e t
es r x e d h
M aa h e.
Qu l yOv riw
ai
t
e ve
• IO- 0 1
S 90
•A 92 cr ct n
S 1 0 et ai
i
o
• Qu l e Ma ua trr Ls (
ai d
n fcues it QML MI- R -
) LP F
385
53
•C a sQ Mitr
ls
lay
i
•C a sVS a eL v l
ls
p c ee
• Qu l e S p l r Ls o D sr uos( L )
ai d u pi s it f it b tr QS D
e
i
•R c e trsacic l u pir oD A a d
o h se i
r ia s p l t L n
t
e
me t aln u t a dD A sa d r s
es lid sr n L tn ad .
y
R c e tr lcrnc , L i c mmi e t
o h se Ee t is L C s o
o
tdo
t
s p ligp o u t ta s t f c so r x e t-
u pyn rd cs h t ai y u tme e p ca
s
t n fr u lya daee u loto eoiial
i s o q ai n r q a t h s r n l
o
t
g
y
s p l db id sr ma ua trr.
u pi
e yn ut
y n fcues
T eoiia ma ua trr d ts e t c o a yn ti d c me t e e t tep r r n e
h r n l n fcue’ aa h e a c mp n ig hs o u n r cs h ef ma c
g
s
o
a ds e ic t n o teR c e tr n fcue v rino ti d vc . o h se Ee t n
n p c ai s f h o h se ma ua trd eso f hs e ie R c e tr lcr -
o
o
isg aa te tep r r n eo i s mio d co p o u t t teoiia OE s e ic -
c u rne s h ef ma c ft e c n u tr rd cs o h r n l M p c a
o
s
g
t n .T pc lv le aefr eee c p r o e o l. eti mii m o ma i m rt g
i s ‘y ia’ au s r o rfrn e up s s ny C r n nmu
o
a
r xmu ai s
n
ma b b s do p o u t h rceiain d sg , i lt n o s mpetsig
y e a e n rd c c aa tr t , e in smuai , r a l e t .
z o
o
n
© 2 1 R cetr l t n s LC Al i t R sre 0 1 2 1
0 3 ohs E cr i , L . lRg s eevd 7 1 0 3
e e oc
h
T l r m r, l s v iw wrcl . m
o e n oe p ae it w . e c o
a
e
s
o ec
TPS2341
SLUS513A − MAY 2003 − REVISED JULY 2004
DUAL SLOT PCI HOT PLUG
POWER CONTROLLER WITH I
2
C INTERFACE
FEATURES
D
12-V, −12-V, 3.3-V, 5-V Main Power Switching
D
D
D
D
D
D
D
D
D
D
and Auxiliary 3.3-V Power Switching
12-V, −12-V And Auxiliary 3.3-V Power FETs
Hot-Swap Protection and Control of All
Supplies
Overcurrent Protection for All Supplies
Isolation of Any Load Fault in One Slot from
Any Other Slot
Undervoltage Monitoring for the Main 12-V,
3.3-V, 5-V and Auxiliary 3.3-V Supplies
Power Fault Latching
Overtemperature Shutdown
I
2
C Interface for Power Control, Power
Status, Slot Control And Slot Status
Compliant To PCI And PCI-X Hot Plug
Specifications
One TPS2341 Supports Two Slots
FETs, allowing each FET to ramp the load voltage
linearly. Each main supply can be programmed for
a desired ramp rate by selecting a gate capacitor
for the power FET for that supply. The power
control circuits also monitor load current and latch
off that slot if the load current exceeds a
programmed maximum value. In addition, once
the 12-V, the 5-V, and the 3.3-V FET are fully
enhanced, the load voltage is monitored. If the
load voltage drops out of specification limit after
these FETs are fully enhanced, the slot latches off.
This feature provides another level of protection
from load fault.
The auxiliary power control circuit provides power
to the 3VAUXx pins through the 3.3-V main supply
when it is above 3.0 V, and through the 3.3-V
standby input supply when the 3.3-V main supply
drops below 3.0 V.
The TPS2341 contains power FETs for 12 V at
500 mA, −12 V at 100 mA, and auxiliary 3.3 V at
375 mA for each slot. These power FETs are
short-circuit protected, slew rate controlled, and
over-temperature protected.
The serial interface communicates with a slot
controller using the I
2
C serial protocol. The
interface communicates with the slot, and
mechanical switches with individual, dedicated
lines. The interface operates from the 3.3-V
auxiliary power, but inputs are 5-V tolerant.
Mechanical switch inputs have internal pull-up
and hysteresis. The serial interface controls slot
power, and monitors board, power fault, and
switch input status.
DESCRIPTION
The TPS2341 contains main supply power
control, auxiliary supply power control, power
FETs for 12-V, −12-V and auxiliary 3.3-V supplies,
and a serial interface for communications with and
control of slots. Each TPS2341 contains supply
control and switching for two slots.
The main power control circuits start with all
supplies off and hold all supplies off until power to
the TPS2341 is valid on all positive supplies.
When power is requested, the control circuit
applies constant current to the gates of the power
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2003, Texas Instruments Incorporated
www.ti.com
1
TPS2341
SLUS513A − MAY 2003 − REVISED JULY 2004
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Input voltage range:
P12VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 15 V
M12VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −15.0 V to 0.5 V
All others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 6 V
P12VO, 5V3VG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
P12VIN
+0.5 V
P12VG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 28 V
M12VO, M12VG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
M12VIN
−0.5 V to 0.5 V
Output current pulse: P12VO (DC internally limited) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 A
M12VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 A
Operating virtual temperature range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 125°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE: All voltages are respect to DGND.
Output voltage range:
electrical characteristics over recommended operating temperature range, P12VINA = P12VINB =
12 V, V5IN = 5 V, V3IN = 3.3 V, DIGVCC = 3.3 V, M12VINA = M12VINB = −12 V, 3VSTBYIN = 3.3 V, all
outputs unloaded, −40°C to 85°C, T
A
= T
J
(unless otherwise noted)
5-V/3.3-V Supply
PARAMETER
5VOC input threshold voltage
5VOC Input threshold voltage
3VOC Input threshold voltage
3VOC input threshold voltage
5VISA, 5VISB voltage fault threshold
5VISA, 5VISB voltage fault minimum captured pulse
5VSA, 5VSB input bias current
5VISA, 5VISB input bias current
5VISA, 5VISB bleed current
3VISA, 3VISB voltage fault threshold
3VISA, 3VISB voltage fault minimum captured pulse
time
3VSA, 3VSB input bias current
3VISA, 3VISB input bias current
3VISA, 3VISB bleed current
5V3VGA, 5V3VGB charge current
5V3VGA, 5V3VGB discharge current
5V3VGA, 5V3VGB good threshold
5V3VGA, 5V3VGB turn-off time
P12VIN = 12V
C5V3VG = 0.022
µF,
5V3VG falling from 90% to 10%
9.5
PWRENx = high
PWRENx = high
PWRENx = low,
3VISx = 3.3 V
5
14
−100
250
10
20
200
11
1
11.5
20
25
PWRENx = high
PWRENx = high
PWRENx = low,
5VISx = 5 V
5
2.70
After P12VG and 5V3VG good
−100
250
10
2.86
75
20
3.05
100
100
TEST CONDITIONS
ROCSET = 6.04 kΩ,
ROCSET = 6.04 kΩ
ROCSET = 6.04 kΩ,
ROCSET = 6.04 kΩ
After P12VG and 5V3VG good
TA = TJ = 25°C
TA = TJ = 25°C
MIN
35
34
41
37
4.3
TYP
42
42
52
52
4.65
75
MAX
49
49
60
62
4.86
100
100
UNIT
mV
mV
mV
mV
V
ns
A
µA
mA
V
ns
µA
A
mA
µA
mA
V
µs
2
www.ti.com
TPS2341
SLUS513A − MAY 2003 − REVISED JULY 2004
electrical characteristics over recommended operating temperature range, P12VINA = P12VINB =
12 V, V5IN = 5 V, V3IN = 3.3 V, DIGVCC = 3.3 V, M12VINA = M12VINB = −12 V, 3VSTBYIN = 3.3 V, all
outputs unloaded, −40°C to 85°C, T
A
= T
J
(unless otherwise noted) (continued)
+12-V Supply / −12-V Supply
PARAMETER
+12-V Internal N-channel MOSFET on-resistance
TEST CONDITIONS
PWREN = HIGH,
TA = TJ = 25°C
PWREN = HIGH,
−12-V Internal N-channel MOSFET on-resistance
PWREN = HIGH,
TA = TJ = 25°C
PWREN = HIGH,
+12-V overcurrent threshold
−12-V overcurrent threshold
P12VOA, P12VOB fault threshold voltage
P12VOA, P12VOB voltage fault minimum captured
pulse time
M12VGA, M12VGB gate charge current
M12VGA, M12VGB gate discharge current
P12VGA, P12VGB, charge current
P12VGA, P12VGB, discharge current
P12VGA, P12VGB good threshold
PWREN = HIGH to M12VO = −10.4 V,
CM12VG = 0.022
µF,
RL = 120
Ω
CM12VO = 50
µF
PWREN = HIGH to P12VO = 11.4 V,
C12PVG = 0.022
µF,
RL = 24
Ω
CP12VO = 200
µF
PWREN = LOW to P12VO = 0.6 V,
CP12VG = 0.022
µF
PWREN = LOW to M12VO = −0.6 V,
CM12VG = 0.022
µF
17.5
Derived from charge pump
2
−23
ROCSET = 6.04 kΩ,
ROCSET = 6.04 kΩ
ROCSET = 6.04 kΩ,
ROCSET = 6.04 kΩ
After P12VG and 5V3VG good
TA = TJ = 25°C
ID = 0.5 A
ID = 0.5 A
ID = 0.1 A
ID = 0.1 A
TA = TJ = 25°C
MIN
TYP
0.18
MAX
0.3
0.4
0.5
0.75
0.9
0.79
0.73
0.20
0.18
9.50
0.94
0.94
0.24
0.24
10.30
75
−20
200
9
100
19.0
15
20.5
20
ms
30
75
µs
µs
mA
14
1.09
1.12
0.28
0.30
11.15
100
−13
A
A
A
A
V
ns
µA
mA
µA
mA
V
UNIT
Ω
Ω
Ω
Turn-on time
1.5
1.5
−20
10
3.5
3.5
Turn-off time
M12VOA, M12VOB bleed current
P12VOA, P12VOB bleed current
noise filter
PARAMETER
Ignored spike from overcurrent
Latched spike from overcurrent
TEST CONDITIONS
MIN
TYP
250
500
MAX
UNIT
ns
ns
www.ti.com
3
TPS2341
SLUS513A − MAY 2003 − REVISED JULY 2004
electrical characteristics over recommended operating temperature range, P12VINA = P12VINB =
12 V, V5IN = 5 V, V3IN = 3.3 V, DIGVCC = 3.3 V, M12VINA = M12VINB = −12 V, 3VSTBYIN = 3.3 V, all
outputs unloaded, −40°C to 85°C, T
A
= T
J
(unless otherwise noted) (continued)
input/output control
PARAMETER
P12VINA, P12VINB supply current
V5IN supply current
V3IN supply current
M12VINA, M12VINB supply current
3VSTBYIN supply current
DIGVCC supply current
Overcurrent fault response time
V3IN start-up threshold voltage
V3IN stop threshold voltage
V5IN start-up threshold voltage
V5IN stop threshold voltage
P12VIN start-up threshold voltage
P12VIN stop threshold voltage
2.6
2.35
4.1
3.75
10.1
9.5
V5IN = 5 V
V3IN = 3.3 V
PWRENx = LOW,
3VSTBYIN = 3.3 V
DIGVCC = 3.3 V
M12VIN −12 V
TEST CONDITIONS
PWRENx = LOW,
P12VIN = 12 V
MIN
TYP
2
1
1000
250
200
200
500
2.8
2.55
4.4
4.00
10.8
10.0
960
3.05
2.80
4.65
4.35
11.3
11.0
V
ns
µA
A
mA
MAX
UNIT
3.3 VAUX
PARAMETER
V3IN slow overcurrent shutdown
V3IN slow overcurrent fault response time
V3IN fast overcurrent shutdown
V3IN fast overcurrent fault response time
3VSTBYIN overcurrent shutdown
3VSTBYIN overcurrent fault response time
V3IN to 3VAUXA, 3VAUXB main switch on-resistance
3VSTBYIN to 3VAUXA, 3VAUXB standby switch
on-resistance
3VSTBYIN undervoltage lockout
V3IN to 3VAUXA, 3VAUXB turn-on slew rate
3VSTBYIN to 3VAUXA, 3VAUXB turn-on slew rate
3VAUXA, 3VAUXB turn-on time from SWA/SWB
3VAUXA, 3VAUXB turn-off time from SWA/SWB
3VSTBYIN to V3IN crossover time
V3IN to 3VSTBYIN crossover time
3VSTBYIN to V3IN crossover threshold
3VSTBYIN to V3IN crossover hysteresis
3VAUXA, 3VAUXB bleed current
3VAUXx = 3 V
2.8
from SWx < 0.8 V,
C3VAUXx = 150
µF
from SWx > 2 V
I3VAUXx = −500 mA
I3VAUXx = −10 mA
2.0
Load applied for < 100
µs,
Load applied for < 100
µs
TA = TJ = 25°C
TEST CONDITIONS
Load applied for > 1 ms,
Load applied for > 1 ms
TA = TJ = 25°C
MIN
0.7
0.6
0.3
1.15
1.0
5
20
10
TYP
1.0
1.0
1.0
1.5
1.5
10
40
25
300
10
2.5
5
0.1
3
2.5
10
100
2.9
50
150
3.0
s
µs
V
mV
µA
V/ms
MAX
1.3
1.4
2.0
1.85
2.0
35
60
50
425
20
2.9
A
µs
mA
µs
mΩ
Ω
V
A
ms
UNIT
ms
ac switching characteristics
PARAMETER
fMAX operating clock frequency
Recommended input rise and fall times
TEST CONDITIONS
0
≤
TA
≤
70°C
10% to 90% of DIGVCC
MIN
0
0.2
TYP
100
MAX
400
1
UNIT
kHz
ns
4
www.ti.com
More (Only the first 5 pages are displayed. Please Download Datasheet to view the full content.) >

Recommended Resources

Narrow pulse forming circuit

Neon lamp fuse blown indication circuit

Monostable multivibrator circuit using falling edge triggering

Telephone flashing light circuit monitor circuit diagram

Phase shift voltage regulation circuit

High frequency part circuit of single sideband receiver

What is the minimum distance that the inductor of a switching power supply chip should be kept from the edge of the board?
When making a board for medical equipment, TPS5430 (switching frequency 500KHz) was used as a step-down chip. During the layout, this part of the circuit was located on the edge of the board. I am wor...
mmmllb Power technology
[Award] Free application to evaluate the motion and environmental sensor development board (X-NUCLEO-IKS01A2)
[size=3]Event details: [url=https://bbs.eeworld.com.cn/thread-553483-1-1.html]Click here to learn more[/url] Thank you to the netizens for participating in this sensor development kit evaluation. Acco...
EEWORLD社区 ST Sensors & Low Power Wireless Technology Forum
Master's thesis - Buck-boost power supply based on TS fuzzy model
Buck-boost power supply based on TS fuzzy model...
lorant Power technology
stm32 reverse method scan 4*4 keyboard
STM32 reverse method scan 4*4 keyboard program...
happy_ stm32/stm8
When msp430 captures the normal side pulse width, what is the minimum pulse width that can be measured?
RT, I use the MCLK of 16M crystal oscillator, and the timer captures the pulse width. I found that the minimum pulse width can only be measured to about 2us. I don't know if there is a problem with my...
wjlwjl11111 Microcontroller MCU
What does int. mean here?
What does int. mean here?----1.8V int., 3.3V memory, 3.3V external I/O microprocessor with 16KB I-Cache/16KB D-Cache/MMU...
vashaoye Embedded System
Shortcut:   S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Popular Components

  1. MV1N6031DUR
  2. C41-GLP48H-NWO
  3. 1N5550D3B-JQRS.SEM
  4. BT-A411NW
  5. 800-033-DAK8ZN12-37PX-72
  6. 62HS45-H9-050ST
  7. SIT3521AI-1C22824U156.250000T
  8. P-0603H1722BSTS
  9. AME8500CEFVAD18
  10. A2541WRA-8P-C290D107E577
  11. A7921WVB-2P-S-0C-C
  12. A2541WR-2x8P-E495-G50

Popular Articles

  1. AI DAY Interpretation - Tesla Autopilot's Visual Architecture
  2. OPPO's smart emergency call patent revealed
  3. s3c2440 learning path-006 clock settings
  4. What should I do if the gas detector alarms?
  5. Wafer foundry orders cut in Q4? Why does the industry's view differ from Morgan Stanley's?
  6. Counterpoint: Indian smartphone market may hit new highs
  7. The development history of relay protection tester_What are the classifications of relay protection tester
  8. Microgate Technology: New composite integrated inductor enters the supply chain of global mainstream customers
  9. Lanqi Technology: Increase related transactions with Intel and develop new PCIe Retimer chips
  10. A woman bought an Apple phone and the clerk obtained her iCloud account: The subsequent plot is unbearable to watch

Technical ResourceMore

  1. Sensor Principles and Engineering Applications (pdf e-book)
  2. Flash fan burning
  3. 8-character left-flow adjustable speed display LED dot matrix program
  4. dxp2004, software download
  5. Power Plant Optimization Case Study
  6. Bit Error Rate and Constellation Diagram Simulation of QPSK System
  7. Aurora Remote Security Assessment System Product White Paper
  8. Design of non-contact remote automatic temperature measuring instrument
  9. Selection method of residual current protection device RCD
  10. PDF Virtual Printer Installation Tutorial

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

About Us Customer Service Contact Information Datasheet Sitemap LatestNews
Index Files: 2050  1534  57  2230  954  42  31  2  45  20 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号