LTC3541-1 Datasheet, PDF (20/20 Pages) Linear Technology – High Efficiency Buck + VLDO Regulator

LTC3541-1
RELATED PARTS
PART NUMBER
LT^®3023
DESCRIPTION
Dual, 2x100mA, Low Noise Micropower LDO
LT3024
Dual, 100mA/500mA, Low Noise Micropower LDO
LTC3025
300mA, Micropower VLDO Linear Regulator
LTC3407
LTC3407-2
LTC3445
Dual Synchronous 600mA Synchronous Step-Down
DC/DC Regulator
Dual Synchronous 800mA Synchronous Step-Down
DC/DC Regulator, 2.25MHz
I²C Controllable Buck Regulator with Two LDOs and
Backup Battery Input
LTC3446
LTC3448
LTC3541
Triple Output Step-Down Converter 1A Output Buck,
Two Each 300mA VDLOs
600mA (I_OUT), High Efficiency, 1.5MHz/2.25MHz
Synchronous Step-Down Regulator with LDO Mode
High Efficiency Buck + VLDO Regulator
LTC3541-2
High Efficiency Buck plus VLDO Regulator
LTC3541-3
High Efficiency Buck plus VLDO Regulator
LTC3547
Dual 300mA (I_OUT), 2.25MHz, Synchronous
Step-Down DC/DC Converter
LTC3548/LTC3548-1 Dual 800mA/400mA (I_OUT), 2.25MHz, Synchronous
LTC3548-2
Step-Down DC/DC Converter
LTC3700
Step-Down DC/DC Controller with LDO Regulator
PowerPath is a trademark of Linear Technology Corporation.
COMMENTS
V_IN: 1.8V to 20V, V_OUT(MIN) = 1.22V, V_DO = 0.30V, I_Q = 40µA, I_SD < 1µA,
V_OUT = ADJ, DFN, MS Packages, Low Noise < 20µV_RMS(P-P), Stable with
1µF Ceramic Capacitors
V_IN: 1.8V to 20V, V_OUT(MIN) = 1.22V, V_DO = 0.30V, I_Q = 60µA, I_SD < 1µA,
V_OUT = ADJ, DFN, TSSOP Packages, Low Noise < 20µV_RMS(P-P), Stable with
1µF Ceramic Capacitors
V_IN: 0.9V to 5.5V, V_OUT(MIN) = 0.4V, 2.7V to 5.5V Bias Voltage Required,
V_DO = 45mV, I_Q = 50µA, I_SD < 1µA, V_OUT = ADJ, DFN Packages, Stable with
1µF Ceramic Capacitors
1.5MHz Constant Frequency Current Mode Operation, V_IN from 2.5V to
5.5V, V_OUT Down to 0.6V, DFN, MS Packages
2.25MHz Constant Frequency Current Mode Operation, V_IN from 2.5V to
5.5V, V_OUT Down to 0.6V, DFN, MS Packages
600mA, 1.5MHz Current Mode Buck Regulator, I²C Programmable
V_OUT from 0.85V to 1.55V, two 50mA LDOs, Backup Battery Input with
PowerPath Control, QFN Package
V_IN: 2.7V to 5.5V, V_OUT(MIN) Buck = 0.8V, V_OUT(MIN) VLDO = 0.4V_OUT(MIN),
14-Pin DFN Package
V_IN: 2.7V to 5.5V, V_OUT(MIN) = 0.6V, Switches to LDO Mode at ≤3A,
DD8, MS8/E Packages
V_IN: 2.7V to 5.5V, V_OUT(MIN) Buck = 0.8V, V_OUT(MIN) VLDO = 0.4V,
3mm × 3mm 10-Pin DFN Package
V_IN: 2.9V to 5.5V, V_OUT(BUCK) = 1.875V, V_OUT(VLDO) = 1.5V, 3mm × 3mm
10-Pin DFN Package
V_IN: 3V to 5.5V, V_OUT(BUCK) = 1.8V, V_OUT(VLDO) = 1.575V, 3mm × 3mm
10-Pin DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40µA, I_SD < 1µA,
8-Pin DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40µA, I_SD < 1µA,
DFN and 10-Pin MS Packages
V_IN from 2.65V to 9.8V, Constant Frequency 550kHz Operation
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
35411fa
LT 0407 REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2007