LMR43620, LMR43610
LMR43620, LMR43610
www.ti.com
SNVSBY4 – DECEMBER 2020
SNVSBY4 – DECEMBER 2020
LMR436x0, 36-V, 1-A/2-A Buck Converter with 1.5 µA IQ in 4-mm2 HotRod™ QFN
1 Features
3 Description
•
Miniature solution size and low component cost
– 2-mm × 2-mm HotRod™ package with wettable
flanks
The LMR436x0 is the industry's smallest 36 V, 2 A
and 1 A synchronous step-down DC/DC converters in
2-mm x 2-mm HotRod™ package. This easy-to-use
converter supports a wide input voltage range of 3.0V
to 36 V with transients up to 42 V. The transient
tolerance reduces the necessary design effort to
protect against input overvoltage and meets the surge
immunity requirements of IEC 61000-4-5.
– Internal compensation
•
Optimized for ultra-low EMI requirements
– Spread spectrum reduces peak emissions
– Pin selectable FPWM mode for constant
frequency at light loads with MODE/SYNC pin
– FSW synchronization with MODE/SYNC pin
Designed for industrial automotive applications
– Junction temperature range: –40°C to +150°C
– Supports 42-V transients
The control architecture and feature-set are optimized
for an ultra-small solution size. The device uses peak
current mode control to minimize output capacitance.
The LMR436x0 minimizes input filter size by utilizing
•
pseudo-random spread spectrum,
a
low-EMI
– Supports 3-VIN minimum
– Adjustable up to 95% of VIN, 3.3-V and 5-V
fixed VOUT options available
HotRod™ package, and an optimized pin-out. The
MODE/SYNC and RT pin variants can be used to set
or synchronize the frequency between 200 kHz and
2.2 MHz to avoid noise sensistive frequency bands.
•
•
> 85% efficiency at 1 mA
– 1.5-µA IQ (switching) at 24 VIN, 3.3 fixed VOUT
Suitable for scalable power supplies
– Adjustable FSW: 200 kHz - 2.2 MHz with RT pin
– Pin compatible with:
The rich feature set of the is designed to simplify
implementation for a wide range of automotive end
equipments.
The compact solution size and rich feature set of
LMR436x0 simplifies implementation for a wide range
of industrial applications.
•
•
LMR36506 (65 V, 600 mA)
LMR36503 (65 V, 300 mA)
2 Applications
Device Information
PART NUMBER
LMR43620
PACKAGE(1)
VQFN-HR (9)
VQFN-HR (9)
BODY SIZE (NOM)
2.00 mm × 2.00 mm
2.00 mm × 2.00 mm
•
•
•
Advanced driver assistance systems: radar ECU
Infotainment and cluster: head unit, eCall
Body electronics and lighting
LMR43610
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
100
90
80
70
60
50
40
30
20
VIN = 12 V
VIN = 24 V
10
0
1E-5
0.0001
0.001 0.01
Load Current (A)
0.10.2 0.5 1
2
SNVS
Typical Solution Size
Efficiency: VOUT = 3.3 V (Fixed), 2.2 MHz
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
Copyright © 2020 Texas Instruments Incorporated
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intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change
Product Folder Links: LMR43620 LMR43610
1
without notice.
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