Datasheet LTC7149 (Analog Devices) - 26
| Manufacturer | Analog Devices |
| Description | 60V, 4A Synchronous Step-Down Regulator for Inverting Outputs |
| Pages / Page | 26 / 26 — 24V Input Concurrent ±12V Supply. PART NUMBER. DESCRIPTION. COMMENTS |
| File Format / Size | PDF / 482 Kb |
| Document Language | English |
24V Input Concurrent ±12V Supply. PART NUMBER. DESCRIPTION. COMMENTS
Model Line for this Datasheet
Text Version of Document
LTC7149 TYPICAL APPLICATION
24V Input Concurrent ±12V Supply
CBOOST1 0.1µF L1 3.3μH VIN 24V RUN BOOST SW 12V V 4A RAIL IN VOUT CIN1 COUT1 EXTV 22µF CC 47µF × 2 LTC3649 MODE/SYNC ITH V SGND INREG PGND R INTV SET3 CC 1k RT ISET IMON CVCC1 RT1 R 2.2µF SET1 CSET1 100k 240k 10nF CBOOST2 0.1µF L2 4.7μH RUN BOOST SW VIN VOUTSNS CIN2 C EXTV OUT2 22µF CC 47µF × 2 LTC7149 MODE/SYNC GND V – OUT VINREG SV – OUT INTVCC ISET CIN3 RT ITH 0.1µF RITH C RSET2 R ITHP CSET2 SET4 1.33k 240k 1k C 220pF 10nF VCC2 R 2.2µF T2 CITH 100k 3.3nF –12V 7149 TA02 2.5A RAIL RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC3649 60V, 4A Synchronous Rail-to-Rail Single Resistor Step-Down VIN(MIN) = 3.1V, VIN(MAX) = 60V, VOUT(MIN) = 0V, 4mm × 5mm Regulator QFN-28, TSSOP-28E LTC3600 15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down VIN(MIN) = 4V, VIN(MAX) = 15V, VOUT(MIN) = 0V, MSOP-12, Regulator 3mm × 3mm DFN-12 LTC3892/ 60V, Low IQ, Dual 2-Phase Synchronous Step-Down PLL Fixed Frequency 50kHz to 900kHz, 4.5V ≤ VIN ≤ 60V, LTC3892-1 DC/DC Controller with 99% Duty Cycle 0.8V ≤ VOUT ≤ 0.99VIN, IQ = 29µA LTC3891 60V, Low IQ, Synchronous Step-Down DC/DC Controller with PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 60V, 99% Duty Cycle 0.8V ≤ VOUT ≤ 24V, IQ = 50µA LT®8620 65V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 65V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD < 1µA, MSOP-16E 3mm × 5mm QFN-24 LTC3863 60V, Low IQ Inverting DC/DC Controller VIN(MIN) = 3.5V, VIN(MAX) = 60V, VOUT(MIN) = –150V, 3mm × 4mm DFN-12, MSOP-12E LT8611 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA and Input/Output ISD <1µA, 3mm × 5mm QFN-24 Current Limit/Monitor LT8612 42V, 6A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 3.0µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD <1µA, 3mm × 6mm QFN-28 LT8614 42V, 4A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD <1µA, 3mm × 4mm QFN-18 7149fa 26 LT 0318 REV A • PRINTED IN USA www.linear.com/LTC7149 For more information www.linear.com/LTC7149 ANALOG DEVICES, INC. 2016
24V Input Concurrent ±12V Supply
CBOOST1 0.1µF L1 3.3μH VIN 24V RUN BOOST SW 12V V 4A RAIL IN VOUT CIN1 COUT1 EXTV 22µF CC 47µF × 2 LTC3649 MODE/SYNC ITH V SGND INREG PGND R INTV SET3 CC 1k RT ISET IMON CVCC1 RT1 R 2.2µF SET1 CSET1 100k 240k 10nF CBOOST2 0.1µF L2 4.7μH RUN BOOST SW VIN VOUTSNS CIN2 C EXTV OUT2 22µF CC 47µF × 2 LTC7149 MODE/SYNC GND V – OUT VINREG SV – OUT INTVCC ISET CIN3 RT ITH 0.1µF RITH C RSET2 R ITHP CSET2 SET4 1.33k 240k 1k C 220pF 10nF VCC2 R 2.2µF T2 CITH 100k 3.3nF –12V 7149 TA02 2.5A RAIL RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC3649 60V, 4A Synchronous Rail-to-Rail Single Resistor Step-Down VIN(MIN) = 3.1V, VIN(MAX) = 60V, VOUT(MIN) = 0V, 4mm × 5mm Regulator QFN-28, TSSOP-28E LTC3600 15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down VIN(MIN) = 4V, VIN(MAX) = 15V, VOUT(MIN) = 0V, MSOP-12, Regulator 3mm × 3mm DFN-12 LTC3892/ 60V, Low IQ, Dual 2-Phase Synchronous Step-Down PLL Fixed Frequency 50kHz to 900kHz, 4.5V ≤ VIN ≤ 60V, LTC3892-1 DC/DC Controller with 99% Duty Cycle 0.8V ≤ VOUT ≤ 0.99VIN, IQ = 29µA LTC3891 60V, Low IQ, Synchronous Step-Down DC/DC Controller with PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ VIN ≤ 60V, 99% Duty Cycle 0.8V ≤ VOUT ≤ 24V, IQ = 50µA LT®8620 65V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 65V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD < 1µA, MSOP-16E 3mm × 5mm QFN-24 LTC3863 60V, Low IQ Inverting DC/DC Controller VIN(MIN) = 3.5V, VIN(MAX) = 60V, VOUT(MIN) = –150V, 3mm × 4mm DFN-12, MSOP-12E LT8611 42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA and Input/Output ISD <1µA, 3mm × 5mm QFN-24 Current Limit/Monitor LT8612 42V, 6A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 3.0µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD <1µA, 3mm × 6mm QFN-28 LT8614 42V, 4A, 96% Efficiency, 2.2MHz Synchronous Micropower VIN(MIN) = 3.4V, VIN(MAX) = 42V, VOUT(MIN) = 0.97V, IQ = 2.5µA, Step-Down DC/DC Converter with IQ = 2.5µA ISD <1µA, 3mm × 4mm QFN-18 7149fa 26 LT 0318 REV A • PRINTED IN USA www.linear.com/LTC7149 For more information www.linear.com/LTC7149 ANALOG DEVICES, INC. 2016
