1 Features

• Radiation Hardened

– SEL, SEB, and SEGR immune up to

LET = 43 MeV-cm2/mg

– SET and SEFI characterized up to

LET = 43 MeV-cm2/mg

– TID assured for every wafer lot up to

20 krad(Si)

– TID characterized up to 30 krad(Si)

• Space Enhanced Plastic

– Controlled baseline

– Au bondwire and NiPdAu lead finish

– Enhanced mold compound for low outgassing

– One fabrication, assembly and test site

– Extended product life cycle

– Extended product change notification

– Product traceability

• Wide voltage conversion range:

– tON-MIN = 60 ns (typical)

– tOFF-MIN = 70 ns (typical)

• Low MOSFET ON-resistance:

– RDS_ON_HS = 53 mΩ (typical)

– RDS_ON_LS = 31 mΩ (typical)

• Adjustable frequency range: 350 kHz to 2.2 MHz

• Synchronizable to external clock

• Internal compensation

• Power-good flag

• Precision enable to program system UVLO

• Fixed or adjustable soft-start time

• Cycle-by-cycle current limiting

• Short-circuit protection with hiccup mode

• Thermal shutdown protection

2 Applications

• Space satellite point of load supply for FPGAs,

microcontrollers, data converters and ASICs

• Communications payload

• Command and data handling

• Optical imaging payload

• Radar imaging payload

• Laser communications payload

• Navigations payload

• Scientific exploration payload

3 Description

The TPS7H4010-SEP is an easy-to-use synchronous

step-down DC/DC converter capable of driving up

to 6 A of load current from a supply voltage

ranging from 3.5 V to 32 V. The TPS7H4010-SEP

provides exceptional efficiency and output accuracy

in a very small solution size. Peak current-mode

control is employed. Additional features such as

adjustable switching frequency, synchronization to

an external clock, FPWM option, power-good flag,

precision enable, adjustable soft start, and tracking

provide both flexible and easy-to-use solutions for

a wide range of applications. Automatic frequency

foldback at light load and optional external bias

improve efficiency over the entire load range. The

device requires few external components and has a

pinout designed for simple PCB layout with optimal

EMI and thermal performance. Protection features

include thermal shutdown, input undervoltage lockout,

cycle-by-cycle current limiting, and hiccup short-circuit

protection.