Diodes AP3581A/B/C - Manual (Page 5)

Data Sheet
Single Phase Synchronous Buck PWM Controller AP3581A/B/C
Oct. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
CC
=12V, T
A
=25 °C, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Unit
SUPPLY INPUT
Supply Voltage V
CC
4.5 13.2 V
Supply Current I
CC
UGATE and LGATE
Pin Open; V
CC
=12V,
Switching
5 mA
Quiescent Supply Current I
CC_Q
V
FB
=V
REF
+0.1V,
No Switching
4 mA
Power Input Voltage V
IN
3.0 13.2 V
POWER ON RESET
V
CC
Rising Threshold V
POR
V
CC
Rising 4.0 4.2 4.4 V
V
CC
Threshold Hysteresis V
POR_HYS
500 mV
OSCILLATOR
AP3581A/B 270 300 330
Oscillator Frequency f
OSC
AP3581C 180 200 220
kHz
Ramp Amplitude ∆V
OSC
V
CC
=12V 1.8 V
ERROR AMPLIFIER
Open Loop DC Gain (Note 3) G
DC_OL
55 70 dB
Gain Bandwidth (Note 3) G
BW
10 MHz
Slew Rate (Note 3) SR 3 6 V/ µs
Transconductance 800 1100 µA/V
Output Source Current V
FB
<V
REF
80 120 µA
Output Sink Current V
FB
>V
REF
80 120 µA
PWM CONTROLLER GATE DRIVERS
Upper Gate Source Current I
UG_SRC
V
BOOT
-V
PHASE
=12V,
V
BOOT
-V
UGATE
=6V
-1 A
Upper Gate Sink Current I
UG_SNK
V
BOOT
-V
PHASE
=12V,
V
BOOT
-V
UGATE
=6V
1.5 A
Upper Gate Sink Resistance R
UGATE
50mA Sink Current,
V
BOOT
-V
PHASE
=12V
1.6 3.2 Ω
Lower Gate Source Current I
LG_SRC
V
CC
-V
LGATE
=6V -1 A
Lower Gate Sink Current I
LG_SNK
V
LGATE
=6V 1.5 A
Lower Gate Sink Resistance R
LGATE
50mA Sink Current,
V
CC
=12V
1 2 Ω
PHASE Falling to LGATE Rising
Delay V
PHASE
<1.2V to
V
LGATE
>1.2V
50 ns