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LM2770 датащи(PDF) 2 Page - Texas Instruments |
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LM2770 датащи(HTML) 2 Page - Texas Instruments |
2 / 20 page 9 8 7 6 10 2 3 4 5 1 Top View Bottom View Die-Attach Pad (DAP) GND Die-Attach Pad (DAP) GND 2 3 4 5 1 9 8 7 6 10 SLEEP VIN C1+ C1- VOUT SLEEP VIN C1+ C1- VOUT VSEL EN C2+ GND C2- VSEL EN C2+ GND C2- LM2770 SNVS318E – NOVEMBER 2004 – REVISED MAY 2013 www.ti.com DESCRIPTION (CONTINUED) LM2770 efficiency is superior to both fixed-gain switched capacitor buck regulators and low-dropout linear regulators (LDO's). Multiple fractional gains maximize power efficiency over the entire input voltage and output current ranges. The LM2770 can also be switched into a low-power sleep mode when load currents are light ( ≤ 20mA). In sleep mode, the charge pump is off, and the output is driven with a low-noise, low-power linear regulator. Soft-start, short-circuit protection, current-limit protection, and thermal-shutdown protection are also included. The LM2770 is available in TI’s small 10-pin Leadless Leadframe Package (WSON-10). Connection Diagram Figure 3. 10-Pin Non-Pullback Leadless Frame Package (WSON-10) See Package Number DSC0010A Pin Description Pin # Name Description 1 VSEL Output Voltage Select Logic Input. If VSEL is high, VOUT = high voltage. If VSEL is low, VOUT = low voltage. (See Order Information for available voltage options) 2 EN Enable Pin Logic Input. If high, part is enabled. If low, part is in shutdown. 3 C2+ Flying Capacitor 2: Positive Terminal 4 GND Ground 5 C2- Flying Capacitor 2: Negative terminal 10 SLEEP Sleep Mode Logic Input. If high, the part operates in sleep mode, and the output is driven by a low power linear regulator. If low, the part operates in full-power mode, and the output is driven by the switched capacitor regulator 9 VIN Input Voltage. Recommended VIN operating range: 2.7V to 5.5V 8 C1+ Flying Capacitor 1: Positive Terminal 7 C1- Flying Capacitor 1: Negative Terminal 6 VOUT Output Voltage These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 2 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: LM2770 |
Аналогичный номер детали - LM2770 |
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Аналогичное описание - LM2770 |
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