Features: Inductorless solution: Application requires only 3 smallceramic capacitors
Fixed 5.0V output and adjustable output voltage optionsavailable
85% Peak Efficiency70% Average Efficiency over Li-Ion Input Range(2.9V-to-4.2V)
Output Current up to 120mA with 2.9V VIN 5.6VOutput 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, keepingthe battery line (VIN) virtually noise-free
Tiny LLP package with outstanding power dissipation:Usually no derating required.
Shutdown Supply Current less than 2AApplicationWhite and Colored LED-based Display Lighting
Cellular Phone SIM cards
Audio Amplifier Power Supplies
General Purpose Li-Ion-to-5V ConversionPinout
Specifications
| Switch Current |
0.12 Amp |
| Output Min |
5.0, 3.8 Volt |
| Output Max |
5.0, 5.2 Volt |
| Input Min Voltage |
2.7 Volt |
| Input Max Voltage |
5.6 Volt |
| Efficiency (peak) |
62 % |
| Frequency Min |
1700 kHz |
| Frequency Max |
1700 kHz |
| Special Features |
Inductorless regulated boost converter, Low noise, constant voltage source for multi-LEDs in parallel |
| Adj Switch Frequency |
No |
| Adjustable Output |
Yes, No |
| On/Off Pin |
Yes |
| PWM Mode |
Preregulated Switched Capacitor Doubler |
| Topology |
Boost |
| Step-Up |
Yes |
| Inverting |
No |
| RegType |
Switched Cap Regulator |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| PowerWise |
No |
| View Using Catalog |
| VIN Pin: Voltage to Ground |
−0.3V to 6V |
| SD Pin: Voltage to GND |
−0.3V to |
|
|
| Junction Temperature (TJ-MAX-ABS) |
(VIN+0.3V) |
| Continuous Power Dissipation |
150°C |
| (Note 3) |
Internally Limited |
| Storage Temperature Range |
|
| Maximum Lead Temperature |
−65°C to 150°C |
| (Soldering, 5 sec.) |
260°C |
| ESD Rating (Note 4) |
|
| Human-body model: |
2 kV |
| Machine model |
100V |
DescriptionThe 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.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM2750LD-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750LD-ADJ |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750LDX-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750LDX-ADJ |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750SD-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750SD-ADJ |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750SDX-5.0 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM2750SDX-ADJ |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
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.For more information on Reliability Metrics, please click here.
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1269: Application Note 1269 LM2750-5.0 Evaluation Board |
233 Kbytes |
2-Oct-03 |
Download |
| AN-1302: Application Note 1302 LM2750-ADJ Evaluation Board |
194 Kbytes |
26-Mar-04 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1777: Application Note 1777 Designing Energy-Efficient Handheld Illumination Solutions |
156 Kbytes |
27-Feb-08 |
Download |
AN-1777 (Chinese): Application Note 1777 Designing Energy-Efficient Handheld Illumination Solutions
|
306 Kbytes |
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| AN-1546: Application Note 1546 LM2754 Evaluation Board |
927 Kbytes |
3-Nov-06 |
Download |
AN-1546 (Chinese): Application Note 1546 LM2754 Evaluation Board
|
393 Kbytes |
|
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| AN-1778: Application Note 1778 LM2755 Charge Pump LED Controller with I2C Compatible Interface in SMD ? |
4110 Kbytes |
30-Apr-08 |
Download |
| AN-1779: Application Note 1779 LM2756 Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in SMD |
2288 Kbytes |
31-Mar-08 |
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| AN-1695: Application Note 1695 LM2758 Flash LED Driver Evaluation Board |
347 Kbytes |
9-Apr-08 |
Download |
| AN-1731: Application Note 1731 LM2757 Evaluation Board |
573 Kbytes |
19-Feb-08 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LM2750 Data Sheet
