參數(shù)資料
型號： ADP1875ARQZ-0.3-R7
廠商： ANALOG DEVICES INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16
封裝： ROHS COMPLIANT, MO-137AB, QSOP-16
文件頁數(shù)： 23/44頁
文件大小： 2475K
代理商： ADP1875ARQZ-0.3-R7
ADP1874/ADP1875
Rev. 0 | Page 3 of 44
SPECIFICATIONS
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). VREG = 5 V,
BST SW = VREG VRECT_DROP (see Figure 40 to Figure 42). VIN = 12 V. The specifications are valid for TJ = 40°C to +125°C,
unless otherwise specified.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
POWER SUPPLY CHARACTERISTICS
High Input Voltage Range
VIN
CVIN = 22 μF(25 V rating) to PGND (at Pin 1)
ADP1874ARQZ-0.3/ADP1875ARQZ-0.3 (300 kHz)
2.95
12
20
V
ADP1874ARQZ-0.6/ADP1875ARQZ-0.6 (600 kHz)
2.95
12
20
V
ADP1874ARQZ-1.0/ADP1875ARQZ-1.0 (1.0 MHz)
3.25
12
20
V
Quiescent Current
IQ_REG + IQ_BST
FB = 1.5 V, no switching
1.1
mA
Shutdown Current
IREG,SD + IBST,SD
EN < 600 mV
140
225
μA
Undervoltage Lockout
UVLO
Rising VIN (see Figure 35 for temperature variation)
2.65
V
UVLO Hysteresis
Falling VIN from operational state
190
mV
INTERNAL REGULATOR
CHARACTERISTICS
VREG and VREG_IN tied together and should not be
loaded externally because they are intended to only
bias internal circuitry
VREG Operational Output Voltage
VREG
CVREG = 4.7 μF to PGND, 0.22 μF to GND, VIN = 2.95 V to 20 V
ADP1874ARQZ-0.3/ADP1875ARQZ-0.3 (300 kHz)
2.75
5
5.5
V
ADP1874ARQZ-0.6/ADP1875ARQZ-0.6 (600 kHz)
2.75
5
5.5
V
ADP1874ARQZ-1.0/ADP1875ARQZ-1.0 (1.0 MHz)
3.05
5
5.5
V
VREG Output in Regulation
VIN = 7 V, 100 mA
4.82
4.981
5.16
V
VIN = 12 V, 100 mA
4.83
4.982
5.16
V
Load Regulation
0 mA to 100 mA, VIN = 7 V
32
mV
0 mA to 100 mA, VIN = 20 V
34
mV
Line Regulation
VIN = 7 V to 20 V, 20 mA
2.5
mV
VIN = 7 V to 20 V, 100 mA
2
mV
VIN to VREG Dropout Voltage
100 mA out of VREG, VIN ≤ 5 V
300
415
mV
Short VREG to PGND
VIN = 20 V
229
320
mA
SOFT START
Soft Start Period Calculation
Connect external capacitor from SS pin to GND,
CSS = 10 nF/ms
10
nF/ms
ERROR AMPLIFER
FB Regulation Voltage
VFB
TJ = 25°C
600
mV
TJ = 40°C to +85°C
596
600
604
mV
TJ = 40°C to +125°C
594.2
600
605.8
mV
Transconductance
Gm
320
496
670
μS
FB Input Leakage Current
IFB, LEAK
FB = 0.6 V, EN = VREG
1
50
nA
CURRENT-SENSE AMPLIFIER GAIN
Programming Resistor (RES)
Value from RES to PGND
RES = 47 kΩ ± 1%
2.7
3
3.3
V/V
RES = 22 kΩ ± 1%
5.5
6
6.5
V/V
RES = none
11
12
13
V/V
RES = 100 kΩ ± 1%
22
24
26
V/V
SWITCHING FREQUENCY
Typical values measured at 50% time points with
0 nF at DRVH and DRVL; maximum values are
guaranteed by bench evaluation1
ADP1874ARQZ-0.3/
ADP1875ARQZ-0.3 (300 kHz)
300
kHz
On-Time
VIN = 5 V, VOUT = 2 V, TJ = 25°C
1120
1200
1280
ns
Minimum On-Time
VIN = 20 V
145
190
ns
Minimum Off-Time
84% duty cycle (maximum)
340
400
ns
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