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MAX17623
MAX17624
2.9V to 5.5V,1A, Synchronous Step-Down
Converter with Integrated MOSFETs
General Description
Benefits and Features
The Himalaya series of voltage regulator ICs, power
modules, and chargers enable cooler, smaller, and
simpler power supply solutions.ꢀ MAX17623 and
MAX17624 are high-frequency synchronous Himalaya
step-down DC-DC converters with integrated MOSFETs
and internal compensation. MAX17623 and MAX17624
have an input-voltage range of 2.9V to 5.5V, supports up
to 1A, and output voltage can be adjusted from 0.8V to
3.3V.
● Easy to Use
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2.9V to 5.5V Input
Adjustable 0.8V to 3.3V Output
±1% Feedback Accuracy
Up to 1A Output Current
Fixed 2MHz or 4MHz Operation
100% Duty-Cycle Operation
Internally Compensated
All Ceramic Capacitors
The MAX17623 and MAX17624 employ peak-current-
mode control architecture under steady-state operation.ꢀ
To reduce input-inrush current, the devices offer a fixed
1ms soft-start time. Both devices feature selectable
PWM for fixed frequency operation, or PFMꢀmode for
better efficiency at light loads.ꢀWhen PWM mode is
selected, MAX17623 operates at a fixed 2MHz switching
frequency and MAX17624 operates at a fixed 4MHz
switching frequency. MAX17623 offers output voltages
from 0.8V to 1.5V, and MAX17624 offers output voltages
from 1.5V to 3.3V.
● High Efficiency
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Selectable PWM- or PFM-Mode of Operation
Shutdown Current as Low as 0.1μA (typ)
● Flexible Design
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Internal Soft-Start and Prebias Startup
Open-Drain Power Good Output (PGOOD Pin)
● Robust Operation
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Overtemperature Protection
Overcurrent Protection
-40°C to +125°C Ambient Operating
Temperature/ -40°C to +150°C Junction
Temperature
The MAX17623 and MAX17624 devices are available in
a compact 8-pin, 2mm × 2mm TDFN package.
Applications
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Point-of-Load Power Supply
Standard 5V Rail Supplies
Battery-Powered Applications
Distributed Power Systems
Ordering Information at end of data sheet.
Industrial Sensors and Process Control
Typical Application Circuit
L1
1µH
3.6V TO 5.5V
3.3V, 1A
MAX17624
LX
V
IN
IN
C
10µF
C
2.2µF
OUT
IN
R1
118kΩ
OUTSNS
EN
PGOOD
FB
R2
37.4kΩ
MODE
GND
19-100976; Rev 0; 10/20