LTC3221是Micropower, Regulated Charge Pump in 2 x 2 DFN

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LTC3221 - LTC3221是Micropower, Regulated Charge Pump in 2 x 2 DFN

LTC3221是Linear公司的一款稳压的升压型充电泵产品，LTC3221是Micropower, Regulated Charge Pump in 2 x 2 DFN，本站介绍了LTC3221的封装应用图解、特点和优点、功能等，并给出了与LTC3221相关的凌力尔特元器件型号供参考。

LTC3221 - Micropower, Regulated Charge Pump in 2 x 2 DFN

LTC3221/LTC3221-3.3/LTC3221-5 - Micropower, Regulated Charge Pump in 2 x 2 DFN - Linear Technology（凌力尔特）

功能描述

The LTC3221 family are micropower charge pump DC/DC converters that produce a regulated output at up to 60mA. The input voltage range is 1.8V to 5.5V. Extremely low operating current (8μA typical at no load) and low external parts count (one fl ying capacitor and two small bypass capacitors at VIN and VOUT) make them ideally suited for small, battery-powered applications.

The LTC3221 family includes fi xed 5V and 3.3V output versions plus an adjustable version. All parts operate as Burst Mode switched capacitor voltage doublers to achieve ultralow quiescent current. The chips use a controlled current to supply the output and will survive a continuous short-circuit from VOUT to GND. The FB pin of the adjustable LTC3221 can be used to program the desired output voltage.

The LTC3221 family is available in a low profi le (0.75mm) 2mm × 2mm 6-pin DFN package.

特点

Ultralow Power: 8μA Quiescent Current

Regulated Output Voltages: 3.3V ±4%, 5V ±4%, ADJ

VIN Range: 1.8V to 4.4V (LTC3221-3.3) 2.7V to 5.5V (LTC3221-5)

Output Current: Up to 60mA

No Inductors Needed

Very Low Shutdown Current: <1μA

Shutdown Disconnects Load from VIN

Burst Mode Control

Short-Circuit Protected

Solution Profi le < 1mm

Tiny 2mm × 2mm 6-Pin DFN Package

应用

Low Power 2 AA Cell to 3.3V Supply

Memory Backup Supplies

Tire Pressure Sensors

General Purpose Low Power Li-Ion to 5V Supply

RF Transmitters

Glucose Meters

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC3221EDC	2x2 DFN-6	E	$2.29
LTC3221EDC-3.3	2x2 DFN-6	E	$2.29
LTC3221EDC-3.3#PBF	2x2 DFN-6	E	$2.29
LTC3221EDC-3.3#TR	2x2 DFN-6	E	$2.29	$1.60
LTC3221EDC-3.3#TRM	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC-3.3#TRMPBF	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC-3.3#TRPBF	2x2 DFN-6	E	$2.29	$1.60
LTC3221EDC-5	2x2 DFN-6	E	$2.29
LTC3221EDC-5#PBF	2x2 DFN-6	E	$2.29
LTC3221EDC-5#TR	2x2 DFN-6	E	$2.34	$1.60
LTC3221EDC-5#TRM	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC-5#TRMPBF	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC-5#TRPBF	2x2 DFN-6	E	$2.29	$1.60
LTC3221EDC#PBF	2x2 DFN-6	E	$2.29
LTC3221EDC#TR	2x2 DFN-6	E	$2.29	$1.60
LTC3221EDC#TRM	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC#TRMPBF	2x2 DFN-6	E	$2.34	$1.65
LTC3221EDC#TRPBF	2x2 DFN-6	E	$2.29	$1.60