ADP2325
Data Sheet
SPECIFICATIONS
PVIN1 = PVIN2 = 12 V at TJ = −40°C to +125°C, unless otherwise noted.
Table 1.
Parameters
Symbol Test Conditions/Comments
Min
Typ Max
Unit
POWER INPUT (PVINx PINS)
Power Input Voltage Range
Quiescent Current (PVIN1 + PVIN2)
Shutdown Current (PVIN1 + PVIN2)
PVINx Undervoltage Lockout Threshold
PVINx Rising
VPVIN
IQ
ISHDN
UVLO
4.5
20
5
40
V
mA
μA
MODE = GND, no switching
EN1 = EN2 = GND
3
30
4.2
3.7
4.4
V
V
PVINx Falling
3.5
FEEDBACK (FBx PINS)
FBx Regulation Voltage1
FBx Bias Current
VFB
IFB
PVINx = 4.5 V to 20 V
0.594 0.6
0.606
V
μA
0.01 0.1
ERROR AMPLIFIER (COMPx PINS)
Transconductance
Error Amplifier Source Current
Error Amplifier Sink Current
INTERNAL REGULATOR (INTVCC PIN)
INTVCC Voltage
gm
ISOURCE
ISINK
370
40
45
500 630
μS
μA
μA
65
65
90
85
4.75
80
5
5.25
V
mV
mA
Dropout Voltage
IINTVCC = 30 mA
300
100 120
Regulator Current Limit
SWITCH NODE (SWx PINS)
High-Side On Resistance2
High-Side Peak Current Limit
VBST to VSW = 5 V
RILIM = floating, VBST to VSW = 5 V
RILIM = 47 kΩ, VBST to VSW = 5 V
48
8
4.8
50
80
9.6
6.2
mΩ
A
A
6.4
3.4
Low-Side Negative Current-Limit Threshold
Voltage3
mV
SWx Minimum On Time3
SWx Minimum Off Time3
LOW-SIDE DRIVER (DLx PINS)
Rising Time3
tMIN_ON
tMIN_OFF
130
150
ns
ns
tR
tF
CDL = 2.2 nF, see Figure 23
CDL = 2.2 nF, see Figure 26
20
10
4
ns
ns
Ω
Falling Time3
Sourcing Resistor
Sinking Resistor
6
3
1.4
Ω
OSCILLATOR (RT PIN)
PWM Switching Frequency
PWM Frequency Range
SYNCHRONIZATION (SYNC PIN)
SYNC Input
fSW
ROSC = 100 kΩ
510
250
600 690
kHz
1200 kHz
SYNC configured as input
Synchronization Range
Minimum On Pulse Width
Minimum Off Pulse Width
High Threshold
300
100
100
1.3
1200 kHz
ns
ns
V
Low Threshold
SYNC Output
Frequency on SYNC Pin
Positive Pulse Time
SOFT START (SSx PINS)
SSx Pin Source Current
0.4
4.5
V
SYNC configured as output
fCLKOUT
fSW
kHz
ns
100
2.5
ISS
3.5
μA
Rev. 0 | Page 4 of 32
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