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MAX16922 Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX16922
Description  2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16922 Datasheet(HTML) 3 Page - Maxim Integrated Products

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2.2MHz, Dual, Step-Down DC-DC
Converters, Dual LDOs, and
RESET
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTS1 Discharge Resistance
EN = low (or optionally EN = high and
VPV1 < 5.7V)
70
OUT2—SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
Supply-Voltage Range
VPV2
Fully operational
2.7
5.5
V
PWM Switching Frequency
fSW
Internally generated
2.0
2.2
2.4
MHz
Duty cycle = 20% to 90%;
ILOAD = 1mA to 600mA, PWM = high
-3
+3
%
Voltage Accuracy
VOUT2
SKIP mode (Note 4)
-2
+4
%
pMOS On-Resistance
VPV2 = 5.0V, ILX2 = 0.2A
150
250
m
nMOS On-Resistance
VPV2 = 5.0V, ILX2 = 0.2A
200
350
m
pMOS Current-Limit Threshold
0.75
0.9
1.05
A
nMOS Zero-Crossing Threshold
50
mA
Soft-Start Ramp Time
1.5
ms
Maximum Output Current
IOUT2
VOUT2 + 0.5V
≤ VPV2 ≤ 5.5V
600
mA
LX2 Leakage Current
VPV2 = 6V, LX2 = PGND2 or VPV2;
TA = -40°C to +85°C
±1
µA
Duty-Cycle Range
Forced-PWM mode only, minimum duty
cycle in skip mode is 0% (Note 4)
15
100
%
OUTS2 Discharge Resistance
EN = 0V
70
OUT3—LDO REGULATOR
Input Voltage
VPV3
1.7
5.5
V
Voltage Accuracy
VOUT3
VOUT3 + 0.4V
≤ VPV3 ≤ 5.5V, ILOAD = 1mA
-2
+2
%
Load Regulation
ILOAD = 0 to 300mA
-0.2
%
Dropout Voltage
VPV3 = 1.8V, ILOAD = 250mA (Note 4)
130
320
mV
Current Limit
450
mA
Power-Supply Rejection Ratio
IOUT3 = 30mA, f = 1kHz
57
dB
Shutdown Output Resistance
EN = low
1
k
OUT4—LDO REGULATOR
Input Voltage
VPV4
1.7
5.5
V
Voltage Accuracy
VOUT4
(VOUT4 + 0.4V)
≤ VPV4 ≤ 5.5V, ILOAD = 1mA
-2
+2
%
Load Regulation
ILOAD = 0 to 300mA
-0.2
%
Dropout Voltage
VPV4 = 1.8V, ILOAD = 250mA (Note 4)
130
320
mV
Current Limit
450
mA
Power-Supply Rejection Ratio
IOUT4 = 30mA, f = 1kHz
57
dB
Shutdown Output Resistance
EN = low
1
k
THERMAL OVERLOAD
Thermal-Shutdown Temperature
(Note 4)
150
175
°C
Thermal-Shutdown Hysteresis
15
°C
ELECTRICAL CHARACTERISTICS (continued)
(VPV1 = 13.5V, VPV2 = VPV3 = VOUT1, VPV4 = VOUT2; TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C under normal conditions, unless otherwise noted.) (Note 2)


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