LTC1844ES5-3.3#TRM datasheet, PDF

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LTC1844ES5-3.3#TRM: DescriptionLDO Regulator Pos 3.3V 0.15A Automotive 5-Pin TSOT-23 T/R; File Size184KB，12 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC1844ES5-3.3#TRM Overview

LDO Regulator Pos 3.3V 0.15A Automotive 5-Pin TSOT-23 T/R

LTC1844ES5-3.3#TRM Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Not Compliant
ECCN (US)	EAR99
Part Status	LTB
SVHC	Yes
SVHC Exceeds Threshold	Yes
Type	LDO
Number of Outputs	1
Polarity	Positive
Accuracy (%)	±1.5
Output Type	Fixed
Output Voltage (V)	3.3
Maximum Output Current (A)	0.15
Minimum Input Voltage (V)	1.6
Maximum Input Voltage (V)	6.5
Maximum Dropout Voltage @ Current (V)	0.055@50mA\|0.15@150mA
Line Regulation	20mV
Load Regulation	20mV
Maximum Quiescent Current (mA)	0.055
Junction to Ambient	250°C/W
Junction to Case	90°C/W
Special Features	Current Limit\|Reverse Battery Protection\|Reverse Current Protection\|Short Circuit Protection\|Shutdown\|Thermal Protection
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Extended
Packaging	Tape and Reel
Supplier Package	TSOT-23
Pin Count	5
Standard Package Name	SOT-23
Mounting	Surface Mount
Package Height	0.9(Max)
Package Length	2.9
Package Width	1.75(Max)
PCB changed	5
Lead Shape	Gull-wing

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LTC1844 Series

150mA, Micropower,

Low Noise, VLDO

Linear Regulator

FEATURES

■

DESCRIPTIO

■

Very Low Dropout:

90mV at 150mA

30mV at 50mA (LTC1844-3.3)

Wide Input Voltage Range: 1.6V to 6.5V

Low 35µA Supply Current, Even in Dropout

Low Noise: 60µV

RMS

(10Hz to 100kHz)

±1.75%

Voltage Accuracy Over Temperature,

Voltage and Current Ranges

Fast Transient Response

10nA Supply Current in Shutdown

Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 2.8V, 3.3V

Adjustable Output Voltage: 1.25V to 6V

Output Current Limit

Reverse-Battery and Reverse-Current Protection

No Protection Diodes Needed

Stable with 1µF Output Capacitor

Stable with Ceramic Capacitors

Short-Circuit and Thermal Overload Protection

Low Profile (1mm) SOT-23 Package

The LTC

1844 Series are low noise VLDO

(very low

dropout) linear regulators designed for low power/portable

applications. These regulators can operate from input

voltages as low as 1.6V. Typical output noise is only

30µV

RMS

and typical dropout for the LTC1844-3.3 is just

90mV at the maximum load current of 150mA, reducing to

30mV at 50mA.

The internal P-channel MOSFET pass transistor requires

no base current, allowing the device to draw only 35µA

during normal operation, independent of the dropout

voltage and load current. The quiescent current falls to a

negligible 10nA during shutdown.

Other features include high output voltage accuracy,

excellent transient response, stability with ultralow ESR

ceramic capacitors as small as 1µF, reverse-battery and

reverse-current protection, short-circuit and thermal

overload protection and output current limiting.

The LTC1844 regulators are available in a low profile

(1mm) SOT-23 (ThinSOT

) package.

, LTC and LT are registered trademarks of Linear Technology Corporation.

VLDO and ThinSOT are trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

APPLICATIO S

■

Portable Instruments and Battery-Powered Systems

Bluetooth/802.11 Cards

Cellular Phones

PDAs and Notebook Computers

TYPICAL APPLICATIO

3.3V TO 6.5V

1µF

OFF ON

LTC1844-3.3 Dropout Voltage vs Load Current

120

Fixed Voltage Low Noise, VLDO Linear Regulator

100

OUT

LTC1844-3.3

BYP

SHDN

GND

1µF

OUT

3.3V

DROPOUT VOLTAGE (mV)

0.1µF

1844 TA01

100

OUT

(mA)

125

150

1844 TA02

1844fa

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