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参数资料
| 型号： | MAX16922AUPH/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC DCDC CONV STPDN LDO 20TSSOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 应用： | 车载系统 |
| 电源电压： | 3.7 V ~ 28 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 20-TSSOP-EP |
| 包装： | 管件 |
MAX16922
2.2MHz, Dual, Step-Down DC-DC
Converters, Dual LDOs, and RESET
ELECTRICAL CHARACTERISTICS (continued)
(V PV1 = 13.5V, V PV2 = V PV3 = V OUT1 , V PV4 = V OUT2 ; T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at
T A = +25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Output Current
I OUT1
(V OUT1 + 1.0V)
V PV1
28V
1.2
A
LX1 Leakage Current
Maximum Duty Cycle
DC MAX
V PV1 = 12V, LX1 = GND or V PV1 ;
T A = -40°C to +85°C
±1
94
μA
%
Minimum Duty Cycle
OUTS1 Discharge Resistance
DC MIN
f SW = 2.2MHz
EN = low (or optionally EN = high and
V PV1 < 5.7V)
20
70
%
OUT2—SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
Supply-Voltage Range
V PV2
Fully operational
2.7
5.5
V
PWM Switching Frequency
Voltage Accuracy
f SW
V OUT2
Internally generated
Duty cycle = 20% to 90%;
I LOAD = 1mA to 600mA, PWM = high
2.0
-3
2.2
2.4
+3
MHz
%
SKIP mode (Note 4)
-2
+4
%
pMOS On-Resistance
nMOS On-Resistance
pMOS Current-Limit Threshold
nMOS Zero-Crossing Threshold
Soft-Start Ramp Time
V PV2 = 5.0V, I LX2 = 0.2A
V PV2 = 5.0V, I LX2 = 0.2A
0.75
150
200
0.9
50
1.5
250
350
1.05
m
m
A
mA
ms
Maximum Output Current
I OUT2
V OUT2 + 0.5V
V PV2
5.5V
600
mA
LX2 Leakage Current
V PV2 = 6V, LX2 = PGND2 or V PV2 ;
T A = -40°C to +85°C
±1
μA
Duty-Cycle Range
OUTS2 Discharge Resistance
Forced-PWM mode only, minimum duty
cycle in skip mode is 0% (Note 4)
V EN = 0V
15
70
100
%
OUT3—LDO REGULATOR
Input Voltage
V PV3
1.7
5.5
V
Voltage Accuracy
V OUT3
V OUT3 + 0.4V
V PV3
5.5V, I LOAD = 1mA
-2
+2
%
Load Regulation
I LOAD = 0 to 300mA
-0.2
%
Dropout Voltage
Current Limit
Power-Supply Rejection Ratio
Shutdown Output Resistance
V PV3 = 1.8V, I LOAD = 250mA (Note 4)
I OUT3 = 30mA, f = 1kHz
EN = low
130
450
57
1
320
mV
mA
dB
k
OUT4—LDO REGULATOR
Input Voltage
V PV4
1.7
5.5
V
Voltage Accuracy
V OUT4
(V OUT4 + 0.4V)
V PV4
5.5V, I LOAD = 1mA
-2
+2
%
Load Regulation
I LOAD = 0 to 300mA
-0.2
%
Dropout Voltage
Current Limit
V PV4 = 1.8V, I LOAD = 250mA (Note 4)
130
450
320
mV
mA
Maxim Integrated
3
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