Datasheet

ADP2323 Data Sheet
Rev. A | Page 4 of 32
SPECIFICATIONS
PVIN1 = PVIN2 = 12 V at T
J
= −40°C to +125°C, unless otherwise noted.
Table 1.
Parameters Symbol Test Conditions/Comments Min Typ Max Units
POWER INPUT (PVINx PINS)
Power Input Voltage Range V
PVIN
4.5 20 V
Quiescent Current (PVIN1 + PVIN2) I
Q
MODE = GND, no switching 3 5 mA
Shutdown Current (PVIN1 + PVIN2) I
SHDN
EN1 = EN2 = GND 50 100 µA
PVINx Undervoltage Lockout Threshold UVLO
PVINx Rising 4.3 4.5 V
PVINx Falling
3.5
3.8
V
FEEDBACK (FBx PINS)
FBx Regulation Voltage
1
V
FB
PVINx = 4.5 V to 20 V 0.594 0.6 0.606 V
FBx Bias Current I
FB
0.01 0.1 µA
ERROR AMPLIFIER (COMPx PINS)
Transconductance g
m
230 300 370 µS
EA Source Current
I
SOURCE
25
45
65
µA
EA Sink Current I
SINK
25 45 65 µA
INTERNAL REGULATOR (INTVCC PIN)
INTVCC Voltage 4.75 5 5.25 V
Dropout Voltage I
INTVCC
= 30 mA 400 mV
Regulator Current Limit 40 75 120 mA
SWITCH NODE (SWx PINS)
High-Side On Resistance
2
V
BST
to V
SW
= 5 V 90 130 mΩ
SWx Peak Current Limit R
ILIM
= floating, V
BST
to V
SW
= 5 V 4 4.8 5.8 A
R
ILIM
= 47 kΩ, V
BST
to V
SW
= 5 V 2.3 3 3.7 A
R
ILIM
= 15 kΩ, V
BST
to V
SW
= 5 V 0.8 1.5 2.2 A
SWx Minimum On Time
3
t
MIN_ON
130
ns
SWx Minimum Off Time
3
t
MIN_OFF
150 ns
LOW-SIDE DRIVER (DLx PINS )
Rising Time
3
C
DL
= 2.2 nF, see Figure 19 20 ns
Falling Time
3
C
DL
= 2.2 nF, see Figure 22 10 ns
Sourcing Resistor 4 6 Ω
Sinking Resistor 2 4.5 Ω
OSCILLATOR (RT PIN)
PWM Switching Frequency f
SW
R
OSC
= 100 kΩ 530 600 670 kHz
PWM Frequency Range 250 1200 kHz
SYNCHRONIZATION (SYNC PIN)
SYNC Input SYNC configured as input
Synchronization Range 300 1200 kHz
Minimum On Pulse Width
100
ns
Minimum Off Pulse Width
100
ns
High Threshold 1.3 V
Low Threshold 0.4 V
SYNC Output SYNC configured as output
Frequency on SYNC Pin f
CLKOUT
f
SW
kHz
Positive Pulse Time 100 ns
SOFT START (SSx PINS)
SSx Pin Source Current I
SS
2.5 3.5 4.5 µA