AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Features
•
•
•
•
•
•
•
•
•
Dual PWM control circuitry
Operating voltage can be up to 50V
Adjustable Dead Time Control (DTC)
Under Voltage Lockout (UVLO) protection
Short Circuit Protection (SCP)
Variable oscillator frequency: 500KHz Max
2.5V voltage reference output
SOP-16L package
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
General Description
The AP2001 integrates Pulse-width-Modulation (PWM) control
circuit into a single chip, mainly designed for power-supply
regulator. All the functions included are an on-chip 2.5V
reference output, two error amplifiers, an adjustable oscillator,
two dead-time comparators, UVLO, SCP, DTC circuitry, and dual
common-emitter (CE) output transistor circuit.
Recommend the output CE transistors as pre-driver for Driving
externally. The DTC can provide from 0% to 100%. Switching
frequency can be adjustable by trimming RT and CT. During low
V
CC
situation, the UVLO makes sure that the outputs are off until
the internal circuit is operating normally.
Applications
•
•
Backlight inverter
DC/DC converts in computers, etc.
Ordering Information
AP 2001 X X X
Package
S : SOP-16L
Lead Free
L : Lead Free Package
(Note 2)
Packing
- U : Tube
- 13 : Taping
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see
EU Directive Annex Notes 5 and 7.
Device
Lead-free
Tube
Package Packaging
Part Number
Code
(Note 2) Quantity
Suffix
S
SOP-16L
50
-U
13” Tape and Reel
Quantity
2500/Tape & Reel
Part Number Suffix
-13
AP2001S
Note:
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP2001 Rev. 1
1 of 8
www.diodes.com
NOVEMBER 2006
©
Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Recommended Operating Conditions
Symbol
V
CC
V
I
V
O
I
O
I
FB
R
F
C
T
R
T
F
OSC
T
OP
Parameter
Supply Voltage
Amplifier Input Voltage
Collector Output Voltage
Collector Output Current
Current into Feedback Terminal
Feedback Resistor
Timing Capacitor
Timing Resistor
Oscillator Frequency
Operating Free-air Temperature
Min.
3.6
1.05
Max.
40
1.45
40
20
45
15000
100
500
85
Unit
V
V
V
mA
µA
kΩ
pF
kΩ
KHz
ºC
100
150
5.1
1
-20
Electrical Characteristics
(T
A
= 25ºC, V
CC
= 6V, f = 200 KHz)
Reference (REF)
Symbol
Parameter
Output Voltage (pin 16)
V
O
Output Voltage Change with
Temperature
V
DLI
Input Stability
V
DLO
Output Stability
I
O
Short-circuit Output Current
Under voltage lockout (UVLO)
Symbol
Parameter
V
UT
Upper Threshold Voltage (V
CC
)
V
LWT
Lower Threshold Voltage (V
CC
)
V
HT
Hysteresis (V
CC
)
Conditions
I
O
= 1mA
T
A
= -20ºC ~ 25ºC
T
A
= 25ºC ~ 85ºC
V
CC
= 3.6V ~ 40V
I
O
= 0.1 mA ~ 1mA
V
O
= 0
Conditions
I
O(REF)
= 0.1mA
T
A
= 25ºC
Min.
2.4
3
Min.
Typ.
2.5
-0.1
-0.2
2
1
10
Typ.
2.65
2.45
200
Max.
2.6
±1
±1
12.5
7.5
30
Max.
Unit
V
%
%
mV
mV
mA
Unit
V
V
mV
80
AP2001 Rev. 1
4 of 8
www.diodes.com
NOVEMBER 2006
©
Diodes Incorporated
AP2001
MONOLITHIC DUAL CHANNEL PWM CONTROLLER
Electrical Characteristics
( Continued )
Short-circuit protection (SCP) control
Symbol
Parameter
Conditions
V
IT
Input Threshold Voltage
T
A
= 25ºC
V
STB
Standby Voltage
No pull up
V
LT
Latched Input Voltage
No pull up
I
SCP
Input (Source) Current
V
I
= 0.7V, T
A
= 25ºC
V
CT
Comparator Threshold Voltage (FB)
Oscillator (OSC)
Symbol
Parameter
Conditions
F
OSC
Frequency
C
T
= 330 pF, R
T
= 10 KΩ
Standard Deviation of Frequency
C
T
= 330 pF, R
T
= 10 KΩ
Frequency Change with Voltage
V
CC
= 3.6V ~ 40V
∆F
OSC
T
A
= -20ºC ~ 25ºC
Frequency Change with Temperature
T
A
= 25ºC ~ 85ºC
Dead-time control (DTC)
Symbol
Parameter
Conditions
I
BDT
I
DT
V
DT
V
T0
Input Bias Current
Latch Mode (Source) Current
Latched Input Voltage
Input Threshold Voltage at f= 10 KHz
T
A
= 25ºC
I
O
= 40µA
Zero duty cycle
Maximum duty cycle
Conditions
V
O
(FB) = 1.25V
V
O
(FB) = 1.25V
V
O
(FB) = 1.25V
1.05
to
1.45
70
80
1.5
60
V
ref
-0.1
1
0.5
-45
1.6
-70
80
1.2
Min.
-80
2.3
2.05
1.45
Typ.
Max.
±6
±100
500
Unit
mV
nA
nA
V
dB
MHz
dB
V
V
mA
µA
2.25
V
-145
Min.
0.65
140
-10
Typ.
0.7
185
60
-15
1.18
Typ.
200
10
1
-0.4
-0.2
Typ.
Max.
0.75
230
120
-20
Unit
V
mV
mV
µA
V
Unit
KHz
%
Min.
Max.
±2
±2
Max.
1
Min.
Unit
µA
V
T100
Error-amplifier
Symbol
V
IO
I
IO
I
IB
V
CM
AV
GBW
CMRR
V
OH
V
OL
I
OI
I
OO
Parameter
Input Offset Voltage
Input Offset Current
Input Bias Current
160
Common-mode Input Voltage
V
CC
= 3.6V ~ 40V
Range
Open-loop Voltage
R
F
= 200 KΩ
Amplification
Unity-gain Bandwidth
Common-mode Rejection
Ratio
Max. Output Voltage
Min. Output Voltage
Output (Sink) Current (FB)
V
ID
= -0.1V, V
O
= 1.25V
Output (Source) Current (FB) V
ID
= 0.1V, V
O
= 1.25V
AP2001 Rev. 1
5 of 8
www.diodes.com
NOVEMBER 2006
©
Diodes Incorporated
Embedded System
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