MAX38801
Integrated, Step-Down Switching Regulator With
Selectable Applications Configurations
General Description
Benefits and Features
● High-Efficiency Solution
The MAX38801 is a fully integrated, highly efficient
switching regulator for applications operating from 6.5V to
14V input supplies that require up to 15A maximum load.
This single-chip regulator provides compact high-efficiency
power delivery for precision outputs that demand fast
transient response.
• Up to 96% Peak
• Up to 92% Full Load
• Up to 94% Light-Load Efficiency at 1A with DCM
Enabled
● Flexible Design Allows Early PCB Definition
• Footprint Compatible with MAX38800 (9A) and
MAX38802/MAX38803 (25A)
The device has different programmability options to enable
a wide range of configurations. The programmable
features include: internal/external reference voltage,
output voltage set-point, switching frequency, overcurrent-
protection level (OCP), and soft-start timing. Discontinuous
current mode (DCM) operation can be enabled using pin-
strapping to improve light-load efficiency.
• Programmable Switching Frequency up to 900kHz
• Programmable Soft-Start and STAT Delay Timings
• Programmable Reference Voltage with External
Input Option
• Programmable Positive and Negative OCP Limit
● Advanced Architecture, Protection and Reporting
Guarantees Reliable Designs
The MAX38801 includes multiple protection and
measurement features. Positive and negative cycle-by-
cycle OCP, short-circuit protection and overtemperature
protection (OTP) ensure robust design. Input undervoltage
and overvoltage lockout shut down the regulator to
prevent damages when the input voltage is out of
specification. Regulation is halted in case of an output
overvoltage (OVP) event. A status pin indicates that the
output voltage is within range and the output voltage is in
regulation. The device has an analog output that can be
configured to report output current or junction temperature
with ±5% and ±8°C accuracy, respectively.
• Analog Current or Temperature Reporting
• Differential Remote Sense with Open-Circuit
Detection
• Fast Transient Response with Quick-PWM™
Architecture
• Percentage-Based Output Power Good and OVP
• Open-Drain Status Indicator (STAT) Pin
• Input Undervoltage and Overvoltage Lockout
• Adaptive Dead-Time Control
● Saves Board Space
• Integrated Boost Switch
Applications
● Servers/µServers
● I/O and Chipset Supplies
● GPU Core Supply
• 19-Ball WLCSP (2.2mm x 2.8mm) Footprint
• Operation Using Ceramic Input and Output
Capacitors
● DDR Memory: VDDQ, VPP and VTT
● Point-of-Load (PoL) Applications
Basic Application Circuit
V
CC
V
DDH
C
VCC
C
IN
V
DDH
V
CC
CURRENT
RATING (A)
INPUT
VOLTAGE (V)
OUTPUT
VOLTAGE (V)
MAX38801
C
BST
V
OUT
BST
VX
R
STAT
L
OUT
15
6.5 to 14
0.6 to 5.5
Ramp Compensation
R
R
STAT
SENSE+
C
R1
C
R2
R
OE
OE
SENSE-
GND
R
FB1
Ordering Information appears at end of data sheet.
AGND
C
R
LEAD
LEAD
PGM
R
LAG
Lead Compensation
C_SEL
C
OUT
R_SEL
R
FB2
C
LAG
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
19-100158; Rev 0; 9/17
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