Datasheet
Package Availability, Models, Samples & Pricing
| Part Number | Package | Factory Lead Time | Models | Samples &
Electronic
Orders | Budgetary Pricing | Std
Pack
Size | Package
Marking
Format |
| Type | Pins | Spec. | MSL
Rating | Peak
Reflow | RoHS
Report | CAD
Symbols | Weeks | Qty | Qty | $US each |
| LM2757TMEV | Switched Capacitor Boost Regulator with High Impedance Output in Shutdown from the PowerWise® Family | Full production | N/A
|
| 1+ | $103.00 | 1 | - |
| 6 weeks | N/A |
| LM2757TM | MICRO SMD | 12 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
| 
| 1K+ | $1.50 | reel
of
250 | XV
I DL |
| 6 weeks | N/A |
| LM2757TMX | MICRO SMD | 12 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $1.50 | reel
of
3000 | XV
I DL |
| 6 weeks | N/A |
General Description
The LM2757 is a constant frequency pre-regulated switched-capacitor charge pump that operates at 1.25 MHz to produce a low-noise
regulated output voltage. The device can be configured to provide up to 100 mA at 4.1V, 110 mA at 4.5V, or 180 mA at 5V. Excellent
efficiency is achieved without the use of an inductor by operating the charge pump in a gain of either 3/2 or 2 according
to the input voltage and output voltage option selection.
The LM2757 presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply
while the LM2757 is shut down.
A perfect fit for space-constrained, battery-operated applications, the LM2757 requires only 4 small, inexpensive ceramic
capacitors. LM2757 is a tiny 1.2 mm X 1.6 mm 12–bump micro SMD device. Built in soft-start, over-current protection, and thermal
shutdown features are also included in this device.
Application Notes
| Title | Size in Kbytes |
Date |
 |
| AN-1731: Application Note 1731 LM2757 Evaluation Board |
573 Kbytes |
19-Feb-08 |
Download |
| 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 |
|
 |
More 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 |
| 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 |
|
|
| AN-1778: Application Note 1778 LM2755 Charge Pump LED Controller with I2C Compatible Interface in µSMD |
4110 Kbytes |
30-Apr-08 |
Download |
| AN-1779: Application Note 1779 LM2756 Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in µSMD |
2288 Kbytes |
31-Mar-08 |
Download |
| AN-1695: Application Note 1695 LM2758 Flash LED Driver Evaluation Board |
347 Kbytes |
9-Apr-08 |
Download |
[Information as of 3-Jul-2009]
|
RoHS Compliance Information