LTC3252_15 Datasheet, PDF (12/12 Pages) Linear Technology – Dual, Low Noise, Inductorless Step-Down DC/DC Converter

LTC3252
TYPICAL APPLICATIO S
Fixed 3.3V_IN to 1.5V_OUT at 300mA
OFF ON
3.3V
4.7µF
1µF
3
V_IN
2
EN1
11
EN2
9
OUT2
5
OUT1
C2^{+ 10}
4
LTC3252
C1⁺
C2^–
8
6 _C1–
FB2 ¹²
1 _FB1
GND ⁷
470k
1µF
OUT
1.5V
300mA
10µF
510k
3252 TA03
3-Cell NiMH with Digitally Selectable 1.2V/1.5V Output
3-CELL
NiMH
3
V_IN
2
EN1 EN1
11
EN2 EN2
9
OUT2
5
OUT1
C2^{+ 10}
4
LTC3252
C1⁺
C2^–
8
1µF
1µF
6 _C1–
12
FB2
4.7µF ₁
FB1
7
GND
412k
100k
261k
EN1
OFF
OFF
ON
ON
I_OUT
250mA
4.7µF
EN2 OUT
OFF 0V
ON 1.2V
OFF 1.5V
ON 1.5V
3252 TA04
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COMMENTS
V_IN = 2.7V to 10V, V_OUT = 3V or 5V, Regulated Output, I_Q = 60µA,
I_SHDN = 10µA, S8
V_IN = 2.7V to 10V, V_OUT = 3.3V or 5V, Regulated Output, I_Q = 60µA,
I_SHDN = <1µA, S8
90% Efficiency, V_IN = 7.4V to 40V, V_OUT Min = 1.24V,
I_Q = 3.2mA, I_SHDN = 30µA, N8, S8
75% Efficiency, V_IN = 2.7V to 5.5V, V_OUT = 1.5V, Regulated Output,
I_Q = 180µA, I_SHDN = 10µA, MS8
75% Efficiency, V_IN = 2.7V to 5.5V, V_OUT = 1.8V, Regulated Output,
I_Q = 180µA, I_SHDN = 10µA, MS8
85% Efficiency, V_IN = 3.1V to 5.5V, V_OUT = 1.5V, Regulated Output,
I_Q = 35µA, I_SHDN = <1µA, ThinSOT
Up to 85% Efficiency, V_IN = 2.7V to 5.5V, V_OUT = 0.9V to 1.6V,
I_Q = 8µA, I_SHDN = <1µA, MS10
95% Efficiency, V_IN = 2.7V to 6V, V_OUT Min = 0.8V,
I_Q = 10µA, I_SHDN = <1µA, MS8
95% Efficiency, V_IN = 2.7V to 6V, V_OUT Min = 0.8V,
I_Q = 20µA, I_SHDN = <1µA, ThinSOT
95% Efficiency, V_IN = 2.5V to 5.5V, V_OUT Min = 0.6V,
I_Q = 20µA, I_SHDN = <1µA, ThinSOT
95% Efficiency, V_IN = 2.5V to 5.5V, V_OUT Min = 0.8V,
I_Q = 60µA, I_SHDN = <1µA, MS10
95% Efficiency, V_IN = 2.5V to 5.5V, V_OUT Min = 0.8V,
I_Q = 60µA, I_SHDN = <1µA, TSSOP-16E
95% Efficiency, V_IN = 2.5V to 5.5V, V_OUT Min = 2.5V,
I_Q = <25µA, I_SHDN = 1µA, MS10
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3252f
LT/TP 0503 1K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003