Datasheet
ADP1874/ADP1875 Data Sheet
Rev. A | Page 4 of 44
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
ADP1874ARQZ-0.6/
ADP1875ARQZ-0.6 (600 kHz)
600 kHz
On-Time VIN = 5 V, V
OUT
= 2 V, T
J
= 25°C 500 540 580 ns
Minimum On-Time VIN = 20 V, V
OUT
= 0.8 V 82 110 ns
Minimum Off-Time 65% duty cycle (maximum) 340 400 ns
ADP1874ARQZ-1.0/
ADP1875ARQZ-1.0 (1.0 MHz)
1.0 MHz
On-Time VIN = 5 V, V
OUT
= 2 V, T
J
= 25°C 285 312 340 ns
Minimum On-Time VIN = 20 V 52 85 ns
Minimum Off-Time 45% duty cycle (maximum) 340 400 ns
OUTPUT DRIVER CHARACTERISTICS
High-Side Driver
Output Source Resistance
2
I
SOURCE
= 1.5 A, 100 ns, positive pulse (0 V to 5 V) 2.25 3.5 Ω
Output Sink Resistance
2
I
SINK
= 1.5 A, 100 ns, negative pulse (5 V to 0 V) 0.70 1 Ω
Rise Time
3
t
r, DRVH
BST − SW = 4.4 V, C
IN
= 4.3 nF (see Figure 59) 25 ns
Fall Time
3
t
f, DRVH
BST − SW = 4.4 V, C
IN
= 4.3 nF (see Figure 60) 11 ns
Low-Side Driver
Output Source Resistance
2
I
SOURCE
= 1.5 A, 100 ns, positive pulse (0 V to 5 V) 1.6 2.4 Ω
Output Sink Resistance
2
I
SINK
= 1.5 A, 100 ns, negative pulse (5 V to 0 V) 0.7 1 Ω
Rise Time
3
t
r,DRVL
VREG = 5.0 V, C
IN
= 4.3 nF (see Figure 60) 18 ns
Fall Time
3
t
f,DRVL
VREG = 5.0 V, C
IN
= 4.3 nF (see Figure 59) 16 ns
Propagation Delays
DRVL Fall to DRVH Rise
3
t
tpdhDRVH
BST − SW = 4.4 V (see Figure 59) 15.4 ns
DRVH Fall to DRVL Rise
3
t
tpdhDRVL
BST − SW = 4.4 V (see Figure 60) 18 ns
SW Leakage Current I
SWLEAK
BST = 25 V, SW = 20 V, VREG = 5 V 110 µA
Integrated Rectifier
Channel Impedance I
SINK
= 10 mA 22 Ω
PRECISION ENABLE THRESHOLD
Logic High Level VIN = 2.9 V to 20 V, VREG = 2.75 V to 5.5 V 570 630 680 mV
Enable Hysteresis VIN = 2.9 V to 20 V, VREG = 2.75 V to 5.5 V 31 mV
COMP VOLTAGE
COMP Clamp Low Voltage V
COMP(LOW)
Tie EN pin to VREG to enable device
(2.75 V ≤ VREG ≤ 5.5 V)
0.47 V
COMP Clamp High Voltage V
COMP(HIGH)
(2.75 V ≤ VREG ≤ 5.5 V) 2.55 V
COMP Zero Current Threshold V
COMP_ZCT
(2.75 V ≤ VREG ≤ 5.5 V) 1.15 V
THERMAL SHUTDOWN T
TMSD
Thermal Shutdown Threshold Rising temperature 155 °C
Thermal Shutdown Hysteresis 15 °C
CURRENT LIMIT
Hiccup Current Limit Timing COMP = 2.4 V 6 ms
OVERVOLTAGE AND POWER GOOD
THRESHOLDS
PGOOD
FB Power Good Threshold FB
PGD
V
FB
rising during system power-up 542 568 mV
FB Power Good Hysteresis 30 mV
FB Overvoltage Threshold FB
OV
V
FB
rising during overvoltage event, I
PGOOD
= 1 mA 691 710 mV
FB Overvoltage Hysteresis 30 mV
PGOOD Low Voltage During Sink V
PGOOD
I
PGOOD
= 1 mA 143 200 mV
PGOOD Leakage Current PGOOD = 5 V 1 400 nA