SOT-89 Step up Switching Regulator with Shutdown
Electrical Characteristics ILC6370BP-50
VOUT = 5.0V, FOSC = 100kHz, TA = 25°C; Test Circuit of figure 1
Parameter
CE “High” Current
CE “Low” Current
LX Limit Voltage
Efficiency
Symbol
ICEH
ICEL
VLXLMT
EFFI
Conditions
Min Typ Max
Units
µA
µ
V
%
0.25
-0.25
LX: 10kΩ pull-up to 5V, VCE = VOUT = 4.5V
LX: 10kΩ pull-up to 5V, VOUT = 4.5V, VCE = 0V
LX: 10kΩ pull-up to 5V, VOUT = 4.5V, FOSC > FOSC x 2(1)
0.7
1.1
85
1. Switching frequency determined by delay time of internal comparator to turn LX “OFF,” and minimum “ON” time as
determined by MAXDTY spec.
Electrical Characteristics ILC6371BP-50
VOUT = 5.0V, FOSC = 100kHz, TA = 25°C; Test Curcuit of figure 2.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
VOUT
4.87 5.000 5.125
V
5
Input Voltage
Oscillation Startup Voltage VST
Supply Current 1
Supply Current 2
EXT “High” On-Resistance REXTH
VIN
10
0.8
64.1
13.8
50
V
V
µA
µA
EXT: 10kΩ pull-up to 5V, VOUT = VST
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V
EXT: 10kΩ pull-up to 5V, VOUT = 5.5V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V,
VEXT = 4.1V
IDD
IDD
1
2
38.4
6.9
30
Ω
EXT “Low” On-Resistance
Oscillator Frequency
REXTL
FOSC
VEXT = 0.4V, VOUT = 5.5V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V,
Measuring of EXT pin
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V,
Measuring of EXT pin
30
100
50
115
Ω
kHz
85
80
Maximum Duty Ratio
MAXDTY
87
92
%
Stand-by Current
CE “High” Voltage
ISTB
VCEH
0.5
µA
V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V,
Existance of LX Oscillation
0.75
CE “Low” Voltage
VCEL
0.20
0.25
-0.25 µA
%
V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V,
Stopped LX Oscillation
EXT: 10kΩ pull-up to 5V, VOUT = VCE = 4.5V
EXT: 10kΩ pull-up to 5V, VOUT = 4.5V, VCE = 0V
CE “High” Current
CE “Low” Current
Efficiency
ICEH
ICEL
EFFI
TSS
µA
85
10
Slow Start Time
msec
Impala Linear Corporation
ILC6370/1 1.3
www.impalalinear.com
(408) 574-3939
July 1999
3
IMPALA [ Impala Linear Corporation ]
