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Overview
| Topology | Buck Converter |
| Input voltage | 2.5-6 V |
| Switching frequency | 1950-2550 kHz |
| Output 1 | 1.8 V / 1 A |
| IC revision | 02 |
Description
The UM3510 is a high efficiency pulse-width-modulated (PWM) synchronous step-down DC-DCconverter with an input voltage range of 2.5V to 6.0V. It provides up to 1000mA output currentfrom a single Li-ion cell. The UM3510 operates at 2.25MHz fixed switching frequency and entersPower Save Mode to maintain high efficiency at light load condition.For low noise applications, the device can be forced into fixed frequency PWM mode by pullingthe MODE pin high.
Features
High Efficiency: Up to 95% 2.25MHz Constant Switching Frequency 1000mA Output Current Integrated Main Switch and SynchronousRectifier. No Schottky Diode Required. 2.5V to 6.0V Input Voltage Range Low Quiescent Current: 56μA Thermal Fault Protection <1μA Shutdown Current
Typical applications
- Wireless and DSL Modems/ WLAN
- Portable Instruments/ PDAs, GPS
- Cellular and Smart Phones/ Microprocessors and DSP Core Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | IRP,40K(A) | ISAT(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(Ω) | fres(MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD2 SMT Power Inductor, 2.2 µH, 2.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD2 SMT Power Inductor | Inductance2.2 µH | Rated Current2.5 A | Performance Rated Current3.5 A | Saturation Current3.38 A | Saturation Current @ 10%4.1 A | Saturation Current @ 30%4.7 A | DC Resistance0.071 Ω | Self Resonant Frequency85 MHz |