Features • 2 MHz (typ.) PWM Switching Frequency • Operates from a single Li-Ion cell (2.7V to 5.5V) • Variable Output Voltage (0.8V to 3.6V) • 300 mA Maximum load capability (PWM mode) • 500 mA Maximum load capability (Bypass mode) • PWM, Forced and Automatic Bypass Mode • High Efficiency (96% Typ at 3.6VIN, 3.2VOUT at 120 mA) from internal synchronous rectification • 10-pin micro SMD Package • Current Overload Protection • Thermal Overload Protection Description The LM3200 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage of 2.7V to 5.5V to a variable output voltage of 0.8V to 3.6V. The output voltage is set using an analog input ( VCON) for optimizing efficiency of the RF PA at various power levels. The LM3200 offers superior features and performance 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. LM3200 has both forced and automatic bypass modes. Shutdown mode turns the device off and reduces battery consumption to 0.1 µA (typ.). The LM3200 is available in a 10-pin lead free micro SMD package. A high switching frequency (2 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required. Applications • Cellular Phones • Hand-Held Radios • RF PC Cards • Battery Powered RF Devices

Also Recommended LMV221 50 MHz - 3.5 GHz, 40dB, RF Transmit Power Detector LMV225 450 MHz - 2 GHz, 30dB, RF Transmit Power Detector MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance *click for larger image

Datasheets

Title		Size	Date	Other Language
	LM3200 Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers	885 Kbytes	16-Nov-05

Featured Application Notes

Title		Size	Date	Other Language
	AN-1373: Application Note 1373 LM3200 Evaluation Board	620 Kbytes	4-Oct-05	中文
	AN-1438: Application Note 1438 A Simple Method to Reduce DC Power Consumption in CDMA RF Power Amplifiers Through the LMV225 and an Efficient Switcher	512 Kbytes	6-Jan-06	中文

More Application Notes

Title		Size	Date	Other Language
	AN-103: Application Note 103 LM340 Series Three Terminal Positive Regulators	421 Kbytes	3-Oct-02
	AN-1419: Application Note 1419 LM3202 Evaluation Board	642 Kbytes	17-Jan-06
	AN-1505: Application Note 1505 LM3207 Evaluation Board	1400 Kbytes	9-Jul-07	中文
	AN-1391: Application Note 1391 LM3204 Evaluation Board	633 Kbytes	7-Mar-06	中文
	AN-1390: Application Note 1390 LM3203 Evaluation Board	655 Kbytes	7-Mar-06	中文
	AN-1413: Application Note 1413 LM3205 Evaluation Board	639 Kbytes	17-Jan-06	中文
	AN-1420: Copy of 201713 - Application Note 1420 LM3208 Evaluation Board	652 Kbytes	26-Mar-09

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM3200TL RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 734 FARNELL Europe and Asia 221	$1.60 each at 1K+ pcs	reel of 250
LM3200TLX/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$1.60 each at 1K+ pcs	reel of 3000

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

CAD Symbols and Models Download LM3200 CAD Symbols

Models N/A