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See Technical Specifications

LTC1751EMS8#TRPBF

Micropower, Regulated Charge Pump DC/DC Converters

Manufacturer:

Analog Devices Inc.
Mfr.Part #:

LTC1751EMS8#TRPBF
Datasheet:

LTC1751EMS8#TRPBF Datasheet (PDF)
Output Voltage:

Adjustable
Output Current:

20 mA
Input Voltage, Max:

5.5 V
Number of Outputs:

1 Output
EDA/CAD Models:

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LTC1751EMS8#TRPBF General Description

The LTC1751 family operate as Burst Mode^™ switched capacitor voltage doublers to achieve ultralow quiescent current. They have thermal shutdown capability and can survive a continuous short circuit from V_out to GND. The PGOOD pin on the LTC1751-3.3 and LTC1751-5 indicates when the output voltage has reached its final value and if the output has an undervoltage fault condition. The FB pin of the adjustable LTC1751 can be used to program the desired output voltage or current. An optional soft-start capacitor may be used at the SS pin to prevent excessive inrush current during start-up.

Key Features

5V Output Current: 100mA (V_IN ≥ 3V)
3.3V Output Current: 80mA (V_IN ≥ 2.5V)
Ultralow Power: 20µA Quiescent Current
Regulated Output Voltage: 3.3V ±4%, 5V ±4%, ADJ
V_IN Range: 2V to 5.5V
800kHz Switching Frequency
No Inductors
Very Low Shutdown Current: <2µA
Shutdown Disconnects Load from V_IN
PowerGood/Undervoltage Output
Adjustable Soft-Start Time
Short-Circuit/Thermal Protection
Available in 8-Pin MSOP

Application

Li-Ion Battery Backup Supplies
Local 3V and 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
White LED Backlighting

Specifications

Product Category	Switching Voltage Regulators	Output Voltage	Adjustable
Output Current	20 mA	Input Voltage, Max	5.5 V
Number of Outputs	1 Output	Topology	Buck
Mounting Style	SMD/SMT	Switching Frequency	800 kHz
Quiescent Current	20 uA	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Series	LTC1751
Input Voltage, Min	2 V	Input Voltage	2 V to 5.5 V
Operating Supply Current	20 uA	Product Type	Switching Voltage Regulators
Shutdown	Shutdown	Factory Pack Quantity	2500
Subcategory	PMIC - Power Management ICs	Type	Regulated Charge Pump DC/DC Converter