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CAT32
Table 2. ABSOLUTE MAXIMUM RATINGS
V IN , LED, SHDN voltage
SW voltage
RSET voltage
Storage Temperature Range
Junction Temperature
Lead Soldering Temperature (10 secs)
ESD Rating – Human Body Model
Parameter
Rating
8
20
1
? 65 to +150
125
300
2000
Unit
V
V
V
° C
° C
° C
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 3. RECOMMENDED OPERATING CONDITIONS
Parameter
V IN
Ambient Temperature Range
Inductor L1
Input Capacitor C1
Output Capacitor C2
I LED with 1 to 4 LEDs in series
NOTE:
Typical application circuit with external components is shown on page 2.
Range
2 to 7
? 40 to +85
6.8 ± 20% typical
4.7 ± 20% typical
1.0 ± 20% typical
0 to 20
Unit
V
° C
m H
m F
m F
mA
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
(Over recommended operating conditions unless otherwise specified. T A = 25 ° C, V IN = 2 V and V SHDN = 1.2 V.)
Symbol
I Q
I GND
V LED
I LED
I LED
Parameter
Quiescent Current
Ground Current in Shutdown
LED Pin Voltage
LED Current Adjust Range
Programmed LED Current
Conditions
V RSET = 0.2 V
V SHDN = 0 V
V IN < V OUT , I LED = 15 mA
R SET = 562 W
Min
5
33
Typ
0.5
0.05
120
38
Max
0.7
1
180
40
45
Unit
mA
m A
mV
mA
mA
R SET = 750 W
R SET = 1.5 k W
R SET = 4.53 k W
25
12.5
30
15
5
36
17.5
I LED
V RSET
LED Pin Current Temperature Coefficient
RSET Pin Voltage
Shutdown Pin Logic High Level
Shutdown Pin Logic Low Level
I LED = 15 mA
R SET = 1.5 k W
0.85
? 0.01
100
0.25
mA/ ° C
mV
V
V
f SW
I SWL
R SW
Boost Converter Frequency
Switch Current Limit
Switch Resistance
V IN = 2 V, I SW = 100 mA
0.8
400
1.2
550
0.7
1.6
780
1.2
MHz
mA
W
V IN = 3 V, I SW = 100 mA
0.5
0.9
Switch Leakage Current
Efficiency
Switch Off, V SW = 5 V
Components shown on Figure 1
0.01
83
5
m A
%
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