Features • Inductorless solution: Application requires only 3 small ceramic capacitors • Fixed 5.0V output and adjustable output voltage options available • 85% Peak Efficiency 70% Average Efficiency over Li-Ion Input Range (2.9V-to-4.2V) • Output Current up to 120mA with 2.9V <= VIN <= 5.6V Output Current up to 40mA with 2.7V <= VIN <= 2.9V • Wide Input Voltage Range: 2.7V to 5.6V • Fixed 1.7MHz switching frequency for a low-noise, low-ripple output signal • Pre-regulation minimizes input current ripple, keeping the battery line (VIN) virtually noise-free • Tiny LLP package with outstanding power dissipation: Usually no derating required. • Shutdown Supply Current less than 2µA Description The LM2750 is a regulated switched-capacitor doubler that produces a low-noise output voltage. The 5.0V output voltage option (LM2750-5.0) can supply up to 120mA of output current over a 2.9V to 5.6V input range, as well as up to 40mA of output current when the input voltage is as low as 2.7V. An adjustable output voltage option with similar output current capabilities is also available (LM2750-ADJ). The LM2750 has been placed in National's 10-pin LLP, a package with excellent thermal properties that keeps the part from overheating under almost all rated operating conditions A perfect fit for space-constrained, battery-powered applications, the LM2750 requires only 3 external components: one input capacitor, one output capacitor, and one flying capacitor. Small, inexpensive ceramic capacitors are recommended for use. These capacitors, in conjunction with the 1.7MHz fixed switching frequency of the LM2750, yield low output voltage ripple, beneficial for systems requiring a low-noise supply. Pre-regulation minimizes input current ripple, reducing input noise to negligible levels. A tightly controlled soft-start feature limits inrush currents during part activation. Shutdown completely disconnects the load from the input. Output current limiting and thermal shutdown circuitry protect both the LM2750 and connected devices in the event of output shorts or excessive current loads. Applications • White and Colored LED-based Display Lighting • Cellular Phone SIM cards • Audio Amplifier Power Supplies • General Purpose Li-Ion-to-5V Conversion

LM2750   2.90 <= V in Lower  V   <= V in Upper  V   <= 5.60 V out 3.80 <=  V <= 5.20 I out    A <= 0.12 Ambient Temperature  °C <= 100 What are WEBENCH® tools? Also Recommended LM3354 High Efficiency Multi-Gain Regulated Switch-Cap Converter 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

Datasheet

Title		Size	Date	Other Language
	LM2750 Low Noise Switched Capacitor Boost Regulator	779 Kbytes	21-Dec-05	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1269: Application Note 1269 LM2750-5.0 Evaluation Board	233 Kbytes	2-Oct-03
	AN-1302: Application Note 1302 LM2750-ADJ Evaluation Board	194 Kbytes	26-Mar-04

More Application Notes

Title		Size	Date	Other Language
	AN-1777: Application Note 1777 Designing Energy-Efficient Handheld Illumination Solutions	156 Kbytes	27-Feb-08	中文
	AN-1998: Application Note 1998 How to Meet the HDMI 5V Source Requirement	117 Kbytes	28-Aug-09
	AN-1546: Application Note 1546 LM2754 Evaluation Board	927 Kbytes	3-Nov-06	中文
	AN-1778: Application Note 1778 LM2755 Charge Pump LED Controller with I2C Compatible Interface in µSMD	4110 Kbytes	30-Apr-08
	AN-1779: Application Note 1779 LM2756 Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in µSMD	2288 Kbytes	31-Mar-08
	AN-1695: Application Note 1695 LM2758 Flash LED Driver Evaluation Board	347 Kbytes	9-Apr-08
	AN-1731: Application Note 1731 LM2757 Evaluation Board	573 Kbytes	19-Feb-08

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM2750LD-5.0	CS065	2	38968	52	0	4402000	1	1249079519
LM2750LD-ADJ	CS065	2	38968	52	0	4402000	1	1249079519
LM2750LDX-5.0	CS065	2	38968	52	0	4402000	1	1249079519
LM2750LDX-ADJ	CS065	2	38968	52	0	4402000	1	1249079519
LM2750SD-5.0	CS065	2	38968	52	0	4402000	1	1249079519
LM2750SD-ADJ	CS065	2	38968	52	0	4402000	1	1249079519
LM2750SDX-5.0	CS065	2	38968	52	0	4402000	1	1249079519
LM2750SDX-ADJ	CS065	2	38968	52	0	4402000	1	1249079519

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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