Specification	LM3203TL/NOPB

Current - Output	500 mA
Frequency - Switching	2 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-30 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	10-WFBGA
Supplier Device Package	10-DSBGA
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	3.6 V
Voltage - Output (Min/Fixed)	0.8 V

LM3203 Series

Part	Number of Outputs	Synchronous Rectifier	Current - Output	Output Configuration	Package / Case	Output Type	Function	Voltage - Output (Min/Fixed)	Topology	Voltage - Input (Max) [Max]	Frequency - Switching	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]	Mounting Type	Supplier Device Package	Voltage - Output (Max) [Max]	Outputs and Type	Outputs and Type	Supplied Contents	Utilized IC / Part	Voltage - Input [Min]	Voltage - Input [Max]	Regulator Topology	Voltage - Output [Min]	Voltage - Output [Max]	Main Purpose	Board Type
Texas Instruments LM3203TL/NOPB	1		500 mA	Positive	10-WFBGA	Adjustable	Step-Down	0.8 V	Buck	5.5 V	2 MHz	-30 °C	85 °C	2.7 V	Surface Mount	10-DSBGA	3.6 V
Texas Instruments LM3203TLEV			500 mA								2 MHz							Non-Isolated	1	Board(s)	LM3203	2.7 V	5.5 V	Buck	0.8 V	3.6 V	DC/DC Step Down	Fully Populated

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.77
		10	$ 4.28
		25	$ 4.05
		100	$ 3.51
	Digi-Reel®	1	$ 4.77
		10	$ 4.28
		25	$ 4.05
		100	$ 3.51
	Tape & Reel (TR)	250	$ 3.33
		500	$ 2.99
		1250	$ 2.52
		2500	$ 2.39
Texas Instruments	SMALL T&R	1	$ 1.09
		100	$ 0.84
		250	$ 0.62
		1000	$ 0.44

Description

General part information

LM3203 Series

The LM3203 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. However, they may be used in many other applications. It steps down an input voltage of 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. The output voltage is set using a VCONanalog input and external resistor dividers for optimizing efficiency of the RF PA at various power levels.

The LM3203 offers 3 modes for mobile phones and similar RF PA applications. Fixed-frequency PWM mode minimizes RF interference. Bypass mode turns on an internal bypass switch to power the PA directly from the battery. Shutdown mode turns the device off and reduces battery consumption to 0.1µA (typ.).

The LM3203 is available in a 10-pin lead free DSBGA package. A high switching frequency (2MHz) allows use of tiny surface-mount components.

Documents

Technical documentation and resources

LM3203 Step-Dwn DC-DC Converter w/Bypass Mode for CDMA/WCDMA RF Pwr Amp datasheet (Rev. D)

Data sheet