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See Technical Specifications

LM2758TL/NOPB

switched capacitor flash LED driver in DSBGA Package

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM2758TL/NOPB
Datasheet:

LM2758TL/NOPB Datasheet (PDF)
Input voltage type:

DC/DC
Topology:

Charge pump, current mode
Vin (min) (V):

2.7
Vin (max) (V):

5.5
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LM2758TL/NOPB General Description

The LM2758 device is an integrated low-noise, high-current switched capacitor DC-DC converter with a regulated current sink. The device is capable of driving loads up to 700 mA from a single-cell Li-Ion battery. Maximum efficiency is achieved over the input voltage range by actively selecting the proper gain based on the LED forward voltage and current requirements.

One external low-power resistor sets the desired current for indicator, torch, and flash modes. To protect the devices and the flash LED, internal time-out circuitry turns off the LM2758 in case of a faulty prolonged flash mode. Internal soft-start circuitry limits the amount of inrush current during start-up.

For all available packages, see the orderable addendum at the end of the data sheet.

Key Features

Up to 700-mA Output Current
90% Peak Efficiency
Indicator, Torch, and Flash Modes
Time-out Circuitry Limits Flash Duration to 814 Milliseconds (Typical)
Adaptive 1× and 1.5× Gains for Maximum Efficiency
True Shutdown
Internal Soft-Start Eliminates Inrush Current
Ultra-Small Solution Size
- No Inductor, Only 4 Capacitors and a Resistor Required
- 2.022 mm × 1.527 mm × 0.6 mm Thin DSBGA package

Specifications

Input voltage type	DC/DC	Topology	Charge pump, current mode
Vin (min) (V)	2.7	Vin (max) (V)	5.5
Vout (max) (V)	5.5	Vout (min) (V)	2.7
Iout (max) (A)	0.7	Iq (typ) (mA)	4
Features	Enable, True Shutdown	Operating temperature range (°C)	-40 to 85
Dimming method	PWM	Number of channels	1
Rating	Catalog	feature-number-of-digits
feature-number-of-segments	1	feature-number-of-led-outputs
feature-topology		feature-process-technology
feature-input-output-type		feature-minimum-operating-supply-voltage-v	2.7
feature-maximum-operating-supply-voltage-v	5.5	feature-output-voltage-v	5.3(Max)
feature-maximum-supply-current-ua		feature-maximum-output-current-ma
feature-maximum-power-dissipation-mw		feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	12
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No