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LM53600-Q1, LM53601-Q1
SNAS660 –JUNE 2015
LM5360x-Q1 5-V, 3.3-V, and Adjustable Synchronous-Buck 1-A Regulator
for Automotive Applications
1 Features
2 Applications
1
•
Automotive Grade Product, AEC Grade 1
Qualified
•
•
Automotive Camera Applications
Automotive Infotainment
•
•
•
•
•
•
10-lead 3 mm x 3 mm WSON Package
–40°C to 150°C junction Temperature Range
Peak Current Mode Control
3 Description
The LM53600/01 synchronous buck regulator is
optimized for automotive applications, providing either
an adjustable output or an output voltage of 3.3 V or
5 V. The LM53600-Q1 device supports load currents
up to 650 mA and the LM536001-Q1 supports load
currents up to 1000 mA.
2.1-MHz (±10%) Fixed Switching Frequency
Pin Selectable Forced PWM Mode
External Frequency Synchronization With Forced
PWM Mode
Advanced high speed circuitry allows the device to
regulate from an 18-V input to a 3.3-V output at a
fixed frequency of 2.1 MHz. Innovative architecture
allows the device to regulate a 3.3-V output from an
input voltage of only 3.8 V. Input voltage range up to
36 V, with transient tolerance up to 42 V, eases input
surge protection design.
•
•
Reset Output With Filter and Delayed Release
Automatic Light Load Mode for Improved
Efficiency
•
Built-In Compensation, Soft-start, Current Limit,
Thermal Shutdown, and UVLO
•
•
Spread Spectrum is Available as a Factory Option
Electrical Specifications
An open drain reset output, with filtering and delayed
release, provides a true indication of system status.
This feature negates the requirement for an additional
supervisory component, saving cost and board
space. Seamless transition between PWM and PFM
modes, along with a quiescent current of only 22 µA,
ensures high efficiency and superior transient
response at all loads. Few external components are
needed allowing the generation of compact PCB
layout. The device characteristics are specified from a
junction temperature range of –40°C up to 150°C.
–
3.5-V to 36 V Input Voltage With Transients up
to 42 V
–
1000-mA Maximum Load Current (LM53601-
Q1)
–
–
650-mA Maximum load Current (LM53600-Q1)
Output Voltage Options: 5 V, 3.3 V, and
Adjustable
–
–
±2% Fixed Output Voltage Tolerance (Over
Temperature)
Device Information(1)
±1.75% FB Voltage Tolerance for Adjustable
Output Version (Over Temperature)
PART NUMBER
LM53600-Q1
PACKAGE
BODY SIZE (NOM)
–
–
1.8-µA Current When Shutdown (Typical)
WSON (10)
3.00mm x 3.00mm
LM53601-Q1
22-µA Quiescent Current at No Load With 3.3-
V Output (Typical)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
Fixed Version
Adjustable Version
VPU
RPU
VPU
VBIAS
RPU
AGND
FB
RESET
EN
BIAS
FB
RESET
EN
VSUPPLY
VSUPPLY
LM53600
LM53601
VIN
VCC
LM53600
LM53601
VIN
VCC
CVCC
CVCC
SYNC/
MODE
SYNC/
MODE
BOOT
SW
BOOT
SW
CBOOT
CBOOT
CIN
CIN
L1
L1
GND
GND
COUT
(DAP)
COUT
(DAP)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.
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