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LM26003

Features: ` High efficiency sleep mode` 40 A typical Iq in sleep mode` 10.8 A typical Iq in shutdown mode` 3.0V minimum input voltage` 4.0V to 38V continuous input range` 1.5% reference accuracy` Cycle-by-cycle current limit` Adjustable Frequency (150 kHz to 500 kHz)` Synchronizable to an external...

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SeekIC No. : 004394921 Detail

LM26003: Features: ` High efficiency sleep mode` 40 A typical Iq in sleep mode` 10.8 A typical Iq in shutdown mode` 3.0V minimum input voltage` 4.0V to 38V continuous input range` 1.5% reference accuracy` Cy...

LM26003 Data Sheet

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Part Number:
LM26003
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

` High efficiency sleep mode
` 40 A typical Iq in sleep mode
` 10.8 A typical Iq in shutdown mode
` 3.0V minimum input voltage
` 4.0V to 38V continuous input range
` 1.5% reference accuracy
` Cycle-by-cycle current limit
` Adjustable Frequency (150 kHz to 500 kHz)
` Synchronizable to an external clock
` Power Good Flag
` Forced PWM function
` Adjustable Soft-start
` TSSOP-20 exposed pad package
` Thermal Shut Down




Application

· Automotive Telematics
· Navigation systems
· In-Dash Instrumentation
· Battery Powered Applications
· Stand-by power for home gateways/set-top boxes




Pinout

Connection Diagram




Specifications

Voltages from the indicated pins to GND:
VIN............. -0.3V to 40V
SW (Note 7) ......... -1V to 40V
VDD............. -0.3V to 7V
VBIAS........... -0.3V to 10V
FB .............. -0.3V to 6V
BOOT VSW.......-0.3V to VSW+7V
PGOOD ........... -0.3V to 7V
FREQ ............ -0.3V to 7V
SYNC............ -0.3V to 7V
EN............. -0.3V to 40V
FPWM ............ -0.3V to 7V
Storage Temperature.. -65 to +150
Power Dissipation (Note 2).... 3.1W
Recommended Lead
Temperature
Vapor Phase (70s) .........215
Infrared (15s) ...........220
ESD Susceptibility ........(Note 3)
Human Body Model .........2 kV

Output Current 3000 mA
Input Min Voltage 3 Volt
Input Max Voltage 38 Volt
Output Min 1.25 Volt
Output Max 35 Volt
Frequency Min 150 kHz
Frequency Max 500 kHz
Efficiency (peak) 92 %
On/Off Pin Yes
Error Flag Yes
SoftStart Yes
Sync Pin Yes
Inverting No
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Adjustable Output Yes
Adj Switch Frequency Yes
PWM Mode Current
Topology Buck
Special Features High efficiency sleep mode, 1.5% output voltage accuracy, Quiescent current 50uA
Step-Down Yes
Multiple Output Capability No
Output Power Undefined Watt
Output Voltage Undefined Volt
Output Range 1.25V to 35V
Switching Frequency Undefined kHz
Feedback Voltage 1.2 Volt
Regulator Family Undefined
AEC Q-100 Automotive Grade Undefined
Automotive Selection Guide Yes
PowerWise Yes
Synchronous Rectification No
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Description

The LM26003 is a switching regulator designed for the high efficiency requirements of applications with stand-by 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 10.8 A typically in shutdown mode and less than 40 A in sleep mode. Forced PWM mode is also available to disable sleep mode.

The LM26003 can deliver up to 3A of continuous load current with a fixed current limit, through the internal N-channel switch. The part has a wide input voltage range of 4.0V to 38V and can operate with input voltages as low as 3V during line transients.

Operating frequency is adjustable from 150 kHz to 500 kHz with a single resistor and can be synchronized to an external clock.

Other features include Power good, adjustable soft-start, enable pin, input under-voltage protection, and an internal bootstrap diode for reduced component count.






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