Rainbow Electronics MAX17083 - Manual (Page 3)

MAX17083
Low-Voltage, Internal Switch,
Step-Down Regulator
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
FB Load Regulation SET = GND -4 mV/A
FB Line Regulation
(Slope Compensation)
V FB
SET = GND, 0 to 100% duty cycle,
V
CC = 4.5V to 5.5V
10 15 20 mV
FB Input Current I FB SET = GND, T A = +25°C -100 -5 +100 nA
High-side n-channel R DH 32 50 Internal MOSFET On-Resistance
(Note 3)
Low-side n-channel R
DL
17 30
m
Internal BST On-Resistance 2
LX Peak Current Limit 5 6 8 A
LX Idle Mode™ Trip Level 1.5 A
LX Zero-Crossing Trip Level 100 mA
Soft-Start Ramp Time T
SS
1939/
f SW
ms
Soft-Start Fault Blanking Time T SSLT
3232/
f SW
ms
POK Upper Trip Threshold and
Overvoltage Fault Threshold
Rising edge, 50mV hysteresis 9 12 14 %
POK Lower Trip Threshold Falling edge, 50mV hysteresis -14 -12 -9 %
POK Propagation Delay Time t POK FB forced 50mV beyond POK trip threshold 5 μs
Overvoltage Fault Latch
Delay Time FB forced 50mV above POK upper trip
threshold
5 μs
Undervoltage Fault Latch
Delay Time FB forced 50mV below POK lower trip
threshold, TUV 1534/
f SW
ms
POK Output Low Voltage I SINK = 3mA 0.4 V
POK Leakage Current I POK
SET = GND, FB = 1V (POK high impedance),
POK forced to 5.5V, T
A = +25°C
1 μA
Thermal-Shutdown Threshold T SHDN Hysteresis = 15
°C
+160 °C
LOGIC INPUTS
EN Input High Threshold Rising, hysteresis = 220mV (typ) 1.0 1.4 1.6 V
EN Input Bias Current T A = +25°C 0.1 1 μA
V CC
V CC -
0.5
Open 3 3.2
REF 1.2 2.2
FREQ and SET Input Voltage
Levels
GND 0.5
V
FREQ and SET Input Bias
Currents
T A = +25°C -2 +0.1 +2 μA
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V IN = V FREQ = V CC = V EN = 5V, I REF = no load, T A = 0°C to +85°C, unless otherwise noted. Typical values are at
T A = +25°C.)
Idle Mode is a trademark of Maxim Integrated Products, Inc.