LTC3245 Datasheet, PDF (16/16 Pages) Linear Technology – Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump

LTC3245
Typical Application
Wide V_IN 5V Supply with Battery Backup
1µF
12V TO 24V
+
+
+ ^{4 × AA}
+
C⁺
C^–
LTC3245
V_IN
V_OUT
SEL2 OUTS/ADJ
1µF
BURST
PGOOD
SEL1
GND
3245 TA05
V_OUT = 5V
I_VOUT UP TO 250mA
10µF
Related Parts
PART NUMBER
LTC1751-3.3/
LTC1751-5
LTC1983-3/
LTC1983-5
LTC3200-5
LTC3202
LTC3204-3.3/
LTC3204B-3.3/
LTC3204-5/
LTC3204B-5
LTC3440
LTC3441
LTC3443
LTC3240-3.3/
LTC3240-2.5
LTC3260
LTC3261
DESCRIPTION
100mA, 800kHz Regulated Doubler
COMMENTS
V_IN: 2V to 5V, V_OUT(MAX) = 3.3V/5V, I_Q = 20μA, I_SD < 2μA, MS8 Package
100mA, 900kHz Regulated Inverter V_IN: 3.3V to 5.5V, V_OUT(MAX) = –3V/–5V, I_Q = 25μA, I_SD < 2μA, ThinSOT™ Package
100mA, 2MHz Low Noise, Doubler/
White LED Driver
125mA, 1.5MHz Low Noise, Fractional
White LED Driver
Low Noise, Regulated Charge Pumps
in (2mm × 2mm) DFN Package
V_IN: 2.7V to 4.5V, V_OUT(MAX) = 5V, I_Q = 3.5mA, I_SD < 1μA, ThinSOT Package
V_IN: 2.7V to 4.5V, V_OUT(MAX) = 5.5V, I_Q = 2.5mA, I_SD < 1μA, DFN, MS Packages
V_IN: 1.8V to 4.5V (LTC3204B-3.3), 2.7V to 5.5V (LTC3204B-5), I_Q = 48μA, B Version without
Burst Mode Operation, 6-Lead (2mm × 2mm) DFN Package
600mA (I_OUT) 2MHz Synchronous
Buck-Boost DC/DC Converter
High Current Micropower 1MHz
Synchronous Buck-Boost DC/DC
Converter
High Current Micropower 600kHz
Synchronous Buck-Boost DC/DC
Converter
3.3V/2.5V Step-Up/Step-Down Charge
Pump DC/DC Converter
Low Noise Dual Supply Inverting
Charge Pump
High Voltage Low I_Q Inverting Charge
Pump
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 2.5V, I_Q = 25μA, I_SD ≤ 1μA, 10-Lead MS
Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 2.5V, I_Q = 25μA, I_SD ≤ 1μA, DFN Package
96% Efficiency, V_IN: 2.4V to 5.5V, V_OUT(MIN) = 2.4V, I_Q = 28μA, I_SD < 1μA, DFN Package
V_IN: 1.8V to 5.5V, V_OUT(MAX) = 3.3V / 2.5V, I_Q = 65μA, I_SD < 1μA, (2mm × 2mm) DFN Package
V_IN Range: 4.5V to 32V, I_Q = 100µA, 100mA Charge Pump, 50mA Positive LDO, 50mA
Negative LDO
V_IN Range: 4.5V to 32V, I_Q = 60µA, 100mA Charge Pump
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_Fo3_r5_m-7_o4_re1_i7_{nformation www.linear.com/LTC3245}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3245
3245f
LT 0313 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2013