LM5164 Datasheet PDF


Part Number

LM5164

Description

100-V Input 1-A synchronous buck DC/DC converter

Manufacture

etcTI

Total Page 30 Pages
PDF Download
Download LM5164 Datasheet PDF


Features Datasheet pdf Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity Reference Design LM5164 SNVSAU 4A – SEPTEMBER 2018 – REVISED JANUA RY 2019 LM5164 100-V Input, 1-A synchr onous buck DC/DC converter with ultra-l ow IQ 1 Features •1 Designed for rel iable and rugged applications – Wide input voltage range of 6 V to 100 V – Junction temperature range: –40°C t o +150°C – Fixed 3-ms internal soft- start timer – Peak and valley current -limit protection – Input UVLO and th ermal shutdown protection • Suited fo r scalable Industrial power supplies an d battery packs – Low minimum on- and off-times of 50 ns – Adjustable swit ching frequency up to 1 MHz – Diode emulation for high light-l.
Keywords LM5164, datasheet, pdf, etcTI, 100-V, Input, 1-A, synchronous, buck, DC/DC, converter, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

LM5164 Datasheet
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
LM5164
SNVSAU4A – SEPTEMBER 2018 – REVISED JANUARY 2019
LM5164 100-V Input, 1-A synchronous buck DC/DC converter with ultra-low IQ
1 Features
1 Designed for reliable and rugged applications
– Wide input voltage range of 6 V to 100 V
– Junction temperature range: –40°C to +150°C
– Fixed 3-ms internal soft-start timer
– Peak and valley current-limit protection
– Input UVLO and thermal shutdown protection
• Suited for scalable Industrial power supplies and
battery packs
– Low minimum on- and off-times of 50 ns
– Adjustable switching frequency up to 1 MHz
– Diode emulation for high light-load efficiency
– 10.5-µA no-load input quiescent current
– 3-µA shutdown quiescent current
– Optimized for CISPR 32 EMI standard
• Integration reduces solution size and cost
– COT mode control architecture
– Integrated 0.725-Ω NFET buck switch supports
wide duty-cycle range
– Integrated 0.34-Ω NFET synchronous rectifier
eliminates external Schottky diode
– 1.2-V internal voltage reference
– No loop compensation components
– Internal VCC bias regulator and boot diode
– Open-drain power good indicator
– 8-Pin SOIC package with PowerPAD™
• Create a custom design using WEBENCH® power
designer
3 Description
The LM5164 synchronous buck converter is designed
to regulate over a wide input voltage range,
minimizing the need for external surge suppression
components. A minimum controllable on-time of 50 ns
facilitates large step-down conversion ratios, enabling
the direct step-down from a 48-V nominal input to
low-voltage rails for reduced system complexity and
solution cost. The LM5164 operates during input
voltage dips as low as 6 V, at nearly 100% duty cycle
if needed, making it an excellent choice for wide input
supply range industrial and high cell count battery
pack applications.
With integrated high-side and low-side power
MOSFETs, the LM5164 delivers up to 1-A of output
current. A constant on-time (COT) control architecture
provides nearly constant switching frequency with
excellent load and line transient response. Additional
features of the LM5164 include ultra-low IQ and diode
emulation mode operation for high light-load
efficiency, innovative peak and valley overcurrent
protection, integrated VCC bias supply and bootstrap
diode, precision enable and input UVLO, and thermal
shutdown protection with automatic recovery. An
open-drain PGOOD indicator provides sequencing,
fault reporting, and output voltage monitoring.
The LM5164 is available in a thermally-enhanced, 8-
pin SO PowerPAD™ package. Its 1.27-mm pin pitch
provides adequate spacing for high-voltage
applications.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM5164
SO PowerPAD (8) 4.89 mm × 3.90 mm
2 Applications
• Appliances, power and garden tools
• High-cell-count battery packs (E-Bike, E-Scooter)
• Motor drives, drones, telecom
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN = 6 V...100 V
CIN
2.2 µF
RRON
100 k:
Typical Application
U1
VIN SW
LM5164
EN/UVLO BST
LO
68 µH
CBST
2.2 nF RFB1
448 k:
RON
FB
GND PGOOD
RFB2
49.9 k:
VOUT = 12 V
IOUT = 1 A
COUT
47 µF
*VOUT tracks VIN if VIN < 12 V
1
Typical Application Efficiency, VOUT = 12 V
100
90
80
70
60
50
40
30
0.001
0.01
0.1
Load (A)
VIN = 14V
VIN = 24V
VIN = 48V
VIN = 72V
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. PRODUCTION DATA.




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)