AMC7660
www.addmtek.com
DESCRIPTION
The AMC7660 is designed for the applications which
require DC - DC converters. It can be operated in a wide
input range from 3.0V to 40V and has the controlled duty
cycle oscillator, driver and high current output switch.
Also, With the internal temperature compensation circuit,
the AMC7660 provides an internally trimmed precision
1.5% reference voltage of 1.25V. These features make the
AMC7660 suitable for step-up, step-down and
voltage–inverting applications.
DC - DC C
ONVERTER
C
ONTROL
C
IRCUIT
FEATURES
Internally trimmed 1.5% 1.25V Reference
Voltage
Wide Input Operating Range: 3.0V to 40V
Output Switch Current up to 1.5A
Low Standby Current
100KHz operational Frequency
Adjustable Output Voltage
Available in 8 Pin Plastic DIP and 8 Pin S.O
Packages
APPLICATIONS
Automobile Chargers
Adaptors
Mother Board
External Modem
ISDN Modem
Scanner
Cellular Phones/Radios
Laptop/Notebook
PACKAGE PIN OUT
OC1
E1
C
T
GND
1
2
3
4
8
7
6
5
OC2
I
S
V
CC
V
IN-
M
PACKAGE
(TOP VIEW)
OC1
E1
C
T
GND
1
2
3
4
8
7
6
5
OC2
I
S
V
CC
V
IN-
DM
PACKAGE
(TOP VIEW)
ORDER INFORMATION
T
A
(
O
C)
0 to 70
0 to 70
Note:
Plastic DIP
8-pin
AMC7660M
AMC7660MF(Lead Free)
M
Plastic SO-8
8-pin
AMC7660DM
AMC7660DMF(Lead Free)
DM
1.All surface-mount packages are available in Tape & Reel.
2.The letter ”F” is marked for Lead Free process.
Append the letter “T” to part number (i.e. AMC7660DMT).
Copyright
©
2006 ADDtek Corp.
1
DD057_C
-- JUNE 2006
AMC7660
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage (V
CC
) ………………………………………………………………………………..…40V
Operating Junction temperature
Plastic (M, DM Package) …………………………………………………………………………….…….. 150
O
C
Storage Temperature Range …………………………………………………………………...…. -65
O
C to 150
O
C
Lead temperature (Soldering, 10 seconds) …………………………………………………………..………300
O
C
Note 1: Exceeding these ratings could cause damage to the device.
negative out of the specified terminal.
All voltages are with respect to Ground. Currents are positive into,
THERMAL DATA
M PACKAGE:
Thermal Resistance-Junction to Ambient,
θ
JA
DM PACKAGE:
Thermal Resistance-Junction to Ambient,
θ
JA
BLOCK DIAGRAM
I
S
7
OC2 8
S
V
CC
6
5 V
IN-
95
O
C/W
165
O
C/W
OC1 1
Q1
Q2
Q
R
1.25V
100
E1 2
I sense
C
T
3
C
T
Oscillator
4 GND
Copyright
©
2006 ADDtek Corp.
2
DD057_C --
JUNE 2006
AMC7660
RECOMMENDED OPERATING CONDITIONS
Recommended Operating
Parameter
Symbol
Min.
Typ.
Max.
V
IR
Comparator Input Voltage
-0.3 to + 40
V
OC1
Switch Collector Voltage
40
V
E1
Switch Emitter Voltage (V
Pin1
=40V)
40
V
CE1
Switch Collector to Emitter Voltage
40
V
C2
Driver Collector Voltage
40
I
C2
Driver Collector Current (Note 1)
100
I
SWITCH
Switch Current
1.5
C
T
Oscillator Timing Capacitor (connected to C
T
pin)
1.0
Operating Ambient Temperature Range
T
A
0 to +70
Note 1: Maximum package power dissipation limits must be observed.
Units
V
V
V
V
V
mA
A
nF
°C
ELECTRICAL CHARACTERISTICS
V
CC
=5.0 V, T
A
=
0
O
C to
70
O
C
,
unless otherwise specified.
Parameter
Symbol
Test Conditions
O
V
IN-
= 0 V, C
T
= 1.0 nF, T
A
= 25
C
V
CC
= 5.0 V to 40 V, T
A
= 25
O
C
V
CC
= 5.0 V to 40 V, T
A
= 25
O
C
I
S
to V
CC,
T
A
= 25
O
C
I
chg
= I
dischg,
T
A
= 25
O
C
AMC7660
Min. Typ. Max.
24
24
140
5.2
250
-
-
50
-
33
35
220
6.5
300
0.9
0.4
75
0.01
42
42
260
7.5
350
1.3
0.7
-
100
Units
KHz
µA
µA
-
mV
V
V
-
µA
OSCILLATOR
Frequency
F
osc
Charge Current
I
chg
Discharge Current
I
dischg
Discharge to Charge Current Ratio
I
dischg
/I
chg
Current Limit Sense Voltage
V
IS
OUTPUT SWITCH
Saturation Voltage, Darlington Connection V
CE1(sat)
Saturation Voltage
DC Current Gain
Collector Off－State Current
COMPARATOR
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
V
th
V
th(line)
I
IB
V
CE1(sat)
h
FE
I
C(off)
I
SW
= 1.0 A, OC1, OC2 connected
I
SW
= 1.0 A, 82
Ω
connected from
OC2 to V
CC
, Forced
β
= 20
I
SW
= 1.0 A, V
CE
= 5.0 V, T
A
= 25
O
C
V
CE
= 40 V
T
A
= 25
O
C
T
A
=0
O
C to 70
O
C
V
CC
= 3.0 V to 40 V
V
IN-
= 0 V
V
CC
= 5.0 V to 40 V,
C
T
= 1.0nF, Pin 7 = V
CC
,
V
IN-
> V
th
, Pin 2= Gnd, remaining
pins open
1.23 1.25 1.27
1.22
-
1.28
-
1.4 5.6
-
-20 -400
V
mV
nA
TOTAL DEVICE
Supply current
I
CC
-
3.0
3.9
mA
Copyright
©
2006 ADDtek Corp.
3
DD057_C --
JUNE 2006
AMC7660
CHARACTERIZATION CURVES
VCC = 5V, Pin 1, 5, 8 open
C
T
= 470pF
VCC = 5V, Pin 1, 5, 8 open
C
T
= 470pF
C
T
pin (PIN#3) waveform
C
T
pin (PIN#3) waveform
VCC = 5V, Pin 1, 5, 8 open
C
T
= 470pF
VCC = 25V, Pin 1, 5, 8 open
C
T
= 470pF
C
T
pin (PIN#3) waveform
C
T
pin (PIN#3) waveform
VCC = 25V, Pin 1, 5, 8 open
C
T
= 470pF
VCC =25V, Pin 1, 5, 8 open
C
T
= 470pF
C
T
pin (PIN#3) waveform
C
T
pin (PIN#3) waveform
Copyright
©
2006 ADDtek Corp.
4
DD057_C --
JUNE 2006
AMC7660
CHARACTERIZATION CURVES
VCC = 5V, Pin 1, 5, 8 open
C
T
= 1nF
VCC = 5V, Pin 1, 5, 8 open
C
T
= 1nF
C
T
pin (PIN#3) waveform
C
T
pin (PIN#3) waveform
VCC = 5V, Pin 1, 5, 8 open
C
T
= 1nF
VCC = 25V, Pin 1, 5, 8 open
C
T
= 1nF
C
T
pin (PIN#3) waveform
C
T
pin (PIN#3) waveform
VCC = 25V, Pin 1, 5, 8 open
C
T
= 1nF
VCC =25V, Pin 1, 5, 8 open
C
T
= 1nF
C
T
pin (PIN#3) waveform
Copyright
©
2006 ADDtek Corp.
5
C
T
pin (PIN#3) waveform
DD057_C --
JUNE 2006
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