The MAX5035 easy-to-use, high-efficiency, high-voltage,
step-down DC-DC converter operates from an
input voltage up to 76V and consumes only 270µA quiescent
current at no load. This pulse-width modulated
(PWM) converter operates at a fixed 125kHz switching
frequency at heavy loads, and automatically switches
to pulse-skipping mode to provide low quiescent current
and high efficiency at light loads. The MAX5035
includes internal frequency compensation simplifying
circuit implementation. The device uses an internal low-on-resistance, high-voltage, DMOS transistor to obtain
high efficiency and reduce overall system cost. This
device includes undervoltage lockout, cycle-by-cycle
current limit, hiccup mode output short-circuit protection,
and thermal shutdown.
The MAX5035 delivers up to 1A output current. The output
current may be limited by the maximum power dissipation
capability of the package. External shutdown is
included, featuring 10µA (typ) shutdown current. The
MAX5035A/B/C versions have fixed output voltages of
3.3V, 5V, and 12V, respectively, while the MAX5035D
features an adjustable output voltage from 1.25V to
13.2V.
The MAX5035 is available in space-saving 8-pin SO
and 8-pin plastic DIP packages and operates over the
automotive (-40°C to +125°C) temperature range.
Key Features
Applications/Uses
Wide 7.5V to 76V Input Voltage Range
Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to 13.2V) Versions
1A Output Current
Efficiency Up to 94%
Internal 0.4Ω High-Side DMOS FET
350µA Quiescent Current at No Load, 10µA Shutdown Current
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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