LTC7825

19

Rev. A

For more information www.analog.com

 ANALOG DEVICES, INC. 2023

10/23

www.analog.com

RELATED PARTS

TYPICAL APPLICATION

PART NUMBER

DESCRIPTION

COMMENTS

LTC7820

Fixed Ratio High Power Inductorless (Charge Pump)

6V < VIN ≤ 72V, Fixed 50% Duty Cycle, 100kHz to 1MHz Switching

Frequency, 4mm × 5mm UFD Package

LTC7821

80V, Hybrid Step-Down Synchronous Controller

10V < VIN ≤ 72V, 0.8V < VOUT ≤ VIN/2, 50kHz to 1.7MHz Switching

Frequency, 5mm × 5mm UH Package

LTC3890/LTC3890-1/

LTC3890-2/LTC3890-3

60V Dual 2-Phase Synchronous Step-Down DC/DC

Controller with 99% Duty Cycle

4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 24V, IQ = 50µA, PLL Fixed Frequency

50kHz to 900kHz

LTC7801

150V Synchronous Step-Down DC/DC Controller

4.5V ≤ VIN ≤ 140V, 150VP-P, 0.8V ≤ VOUT ≤ 60V, IQ = 40µA, PLL Fixed

Frequency 50kHz to 900kHz, 24-Lead 4mm × 5mm QFN or TSSOP

LTC3255

48V Fault Protected 50mA Step-Down Charge Pump

4V ≤ VIN ≤ 48V, 2.4V ≤ VOUT ≤ 12.5V, IQ = 20µA, 3mm × 3mm DFN-10,

MSOP-10

LTC7802

40V Dual 3MHz 2-Phase Synchronous Step-Down

Controller with Spread Spectrum

4.5V ≤ VIN ≤ 40V, VOUT Up to 40V, IQ = 12µA, Fixed Frequency 100kHz

to 3MHz, 16-Pin 3mm × 3mm QFN and MSOP

LTC7803

40V 3MHz Synchronous Step-Down Controller with

Spread Spectrum

4.5V ≤ VIN ≤ 40V, VOUT Up to 40V, IQ = 12µA, Fixed Frequency 100kHz

to 3MHz, 4mm × 5mm QFN-28

Figure 5. High Efficiency 24V to 12V, 10A Voltage Divider with Overvoltage MOSFET at Input

INTVCC

INTVCC

RUN

VCC

FAULT

INTVCC

TIMER

FREQ

HYS_PRGM

VHIGH

BOOSTH

SWH

SWH

FL5V

BOOSTL

VLOW

VOUT

4.7µF

COPT

10µF

×4

CFLY

10µF

×12

VIN

24V

VOUT

12V

10A

10µF

1

100k

0.1µF

FAULT

SGND

PGND

78251 F05

OVG

COUT

10µF

×4

1µF

0.1µF

0.1µF

0.1µF

CHIGH

10µF

×4

BSZ034N04LS

5

CLOW

10µF

×4

EXTVCC

LTC7825

INTVCC