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ILC6377SOADJ Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part # ILC6377SOADJ
Description  0.5A, 300kHz, SO-8 PWM/PFM Step Down Converter with Shutdown
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

ILC6377SOADJ Datasheet(HTML) 4 Page - Fairchild Semiconductor

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Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT
4.875
5.000
5.125
V
Input Voltage
VIN
10
V
Output Maximum Current
IOUT(MAX)
500
600
mA
Input Supply Current
IIN
VIN 5.25V, No Load
ILC6376
2540
3740
µA
ILC6377
71
110
Shutdown Current
IS/D
VS/D = 0V
1.5
2.5
µA
LX Switch On-Resistance
Rds(on)
Open Loop Measurement, VS/D = VIN,
VLX =VIN - 0.2V, VOUT = 4.5V
0.44
0.58
LX Switch Leakage Current
ILXL
Open Loop Measurement, VOUT =
VIN, VLX = 0V
2.0
µA
Oscillator Frequency
FOSC
Measure Waveform at EXT pin VIN =
5.3V
IOUT = 20mA
255
300
345
kHz
Max Duty Cycle
MAXDTY
100
%
PFM Duty Cycle
PFMDTY
No Load (ILC6377)
15
25
35
%
Efficiency
EFFI
95
%
Undervoltage Lockout
VUVLO
Minimum VIN when VREF does not
start up
0.9
1.8
V
Soft-Start Time
TSS
VREF rises to 0V from 0.9V
6.0
10.0
16
msec
Shutdown Input Voltage
VS/D
High = Regulator “ON”
Low = Regulator “OFF”
0.65
0.2
V
EXT1, EXT2 Hi On-
Resistance
REXtHI
Open Loop Measurement
24
32
EXT1, EXT2 Low On-
Resistance
REXtLOW
Open Loop Measurement
20
26
Electrical Characteristics ILC6376/77SO50
Unless Otherwise specified all limits are at VOUT = 5.0V, VIN = 6V, FOSC=300kHz, IOUT = 200mA, TA = 25°C. Circuit config-
uration figure 1.
ILC6376/77
4
©2001 Fairchild Semiconductor Corporation


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