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LM26001, LM26001-Q1
SNVS430I –MAY 2006–REVISED MARCH 2015
LM26001/-Q1 1.5-A Switching Regulator With High-Efficiency Sleep Mode
1 Features
3 Description
The LM26001 is a switching regulator designed for
the high-efficiency requirements of applications with
standby modes. The device features a low-current
sleep mode to maintain efficiency under light-load
conditions and current-mode control for accurate
regulation over a wide input voltage range. Quiescent
current is reduced to 10 µA typically in shutdown
mode and less than 40 µA in sleep mode. Forced
PWM mode is also available to disable sleep mode.
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LM26001-Q1 is an Automotive-Grade Product that
is AEC-Q100 Grade 1 Qualified (–40°C to +125°C
Operating Junction Temperature)
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High-Efficiency Sleep Mode
40-µA Typical Iq in Sleep Mode
10-µA Typical Iq in Shutdown Mode
3.0-V Minimum Input Voltage
4.0-V to 38-V Continuous Input Range
1.5% Reference Accuracy
The LM26001 can deliver up to 1.5 A of continuous
load current with a fixed current limit, through the
internal N-channel switch. The part has a wide input
voltage range of 4.0 V to 38 V and can operate with
input voltages as low as 3 V during line transients.
Cycle-by-Cycle Current Limit
Adjustable Frequency (150 kHz to 500 kHz)
Synchronizable to an External Clock
Power Good Flag
Operating frequency is adjustable from 150 kHz to
500 kHz with
a single resistor and can be
Forced PWM Function
synchronized to an external clock.
Adjustable Soft-Start
Other features include Power Good, adjustable soft-
start, enable pin, input undervoltage protection, and
an internal bootstrap diode for reduced component
count.
HTSSOP-16 Exposed Pad Package
Thermal Shut Down
2 Applications
Device Information(1)
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Automotive Telematics
Navigation Systems
PART NUMBER
LM26001
PACKAGE
BODY SIZE (NOM)
HTSSOP (16)
5.00 mm x 4.40 mm
In-Dash Instrumentation
Battery-Powered Applications
LM26001-Q1
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Standby Power for Home Gateways/Set-top
Boxes
Typical Application Circuit
VIN
1
2
12
VIN
VIN
VBIAS
VOUT
C6
16
15
SW
C1
L
3
4
PGOOD
EN
+
SW
C4
D1
R1
14
7
R4
BOOT
EN
LM26001
11
SYNC
SS
FB
VDD
5
9
6
13
8
COMP
SYNC
FREQ
FPWM
VDD
GND
C8
R2
C5
10
R6
EP
17
C3
R3
R5
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.