Texas Instruments LM51561-Q1 Product Info

Parameters

Rating	Automotive
Topology	Boost, Flyback, SEPIC
Vin (max) (V)	60
Vin (min) (V)	1.5
Vout (max) (V)	300
Vout (min) (V)	1.5
Control mode	current mode
Features	Adjustable current limit, Enable, Frequency synchronization, Hiccup mode protection, Improved max. duty cycle, Light-load efficiency, Nonsynchronous rectification, Power good, Spread Spectrum, UVLO adjustable
EMI features	Frequency Dithering, Spread Spectrum
Duty cycle (max) (%)	93
Iq (typ) (A)	0.00049
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 150

Package

WSON (DSS)-12-6 mm² 3 x 2

Features

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Suited for wide input operating range car battery applications
- 3.5-V to 60-V Operating range (65-V abs max)
- 2.97-V to 16-V When BIAS = VCC
- Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
- Input transient protection up to 65 V
- Minimized battery drain
  - Low shutdown current (I_Q ≤ 2.6 µA)
  - Low operating current (I_Q ≤ 490 µA)
Small solution size and low cost
- Maximum switching frequency of 2.2 MHz
- 12-Pin WSON package (3 mm × 2 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.5-A peak standard MOSFET driver
- Supports external VCC supply
Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
Integrated protection features
- Constant peak current limiting over input voltage
- Optional hiccup mode overload protection (see the Device Comparison Table)
- Programmable line UVLO
- OVP protection
- Thermal shutdown
Accurate ±1% accuracy feedback reference
Programmable extra slope compensation
Adjustable soft start
PGOOD indicator
Create a custom design using the LM5156x-Q1 with the WEBENCH power designer

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Suited for wide input operating range car battery applications
- 3.5-V to 60-V Operating range (65-V abs max)
- 2.97-V to 16-V When BIAS = VCC
- Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
- Input transient protection up to 65 V
- Minimized battery drain
  - Low shutdown current (I_Q ≤ 2.6 µA)
  - Low operating current (I_Q ≤ 490 µA)
Small solution size and low cost
- Maximum switching frequency of 2.2 MHz
- 12-Pin WSON package (3 mm × 2 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.5-A peak standard MOSFET driver
- Supports external VCC supply
Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable switching frequency from 100 kHz to 2.2 MHz
Integrated protection features
- Constant peak current limiting over input voltage
- Optional hiccup mode overload protection (see the Device Comparison Table)
- Programmable line UVLO
- OVP protection
- Thermal shutdown
Accurate ±1% accuracy feedback reference
Programmable extra slope compensation
Adjustable soft start
PGOOD indicator
Create a custom design using the LM5156x-Q1 with the WEBENCH power designer

Description

The LM5156x-Q1 (LM5156-Q1 and LM51561-Q1) device is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies.

The LM5156x-Q1 device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V.

ELECTRONIC COMPONENTS
All In One Distributor

LM51561-Q1

2.2-MHz wide VIN nonsynchronous boost, flyback, & SEPIC controller with spread spectrum and hiccup

Texas Instruments LM51561-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM51561-Q1

2.2-MHz wide VIN nonsynchronous boost, flyback, & SEPIC controller with spread spectrum and hiccup

Texas Instruments LM51561-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor