Datasheet Linear Technology LTC1844

Manufacturer	Linear Technology
Series	LTC1844

150mA, Micropower, Low Noise, VLDO Linear Regulator

Datasheets

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PDF, 213 Kb, Language: en, File uploaded: Sep 2, 2017, Pages: 12
150mA, Micropower, Low Noise, VLDO Linear Regulator

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Prices

Packaging

	LTC1844ES5-1.5#PBF	LTC1844ES5-1.5#TRMPBF	LTC1844ES5-1.5#TRPBF	LTC1844ES5-1.8#PBF	LTC1844ES5-1.8#TRMPBF	LTC1844ES5-1.8#TRPBF	LTC1844ES5-2.5#PBF	LTC1844ES5-2.5#TRMPBF	LTC1844ES5-2.5#TRPBF	LTC1844ES5-2.8#PBF	LTC1844ES5-2.8#TRMPBF	LTC1844ES5-2.8#TRPBF	LTC1844ES5-3.3#PBF	LTC1844ES5-3.3#TRMPBF	LTC1844ES5-3.3#TRPBF	LTC1844ES5-BYP#TRMPBF	LTC1844ES5-BYP#TRPBF	LTC1844ES5-SD#PBF	LTC1844ES5-SD#TRMPBF	LTC1844ES5-SD#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Package	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing	SOT-23 Package Outline Drawing
Package Code	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5	S5
Package Index	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635	05-08-1635
Pin Count	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5

Parametrics

Parameters / Models	LTC1844ES5-1.5#PBF	LTC1844ES5-1.5#TRMPBF	LTC1844ES5-1.5#TRPBF	LTC1844ES5-1.8#PBF	LTC1844ES5-1.8#TRMPBF	LTC1844ES5-1.8#TRPBF	LTC1844ES5-2.5#PBF	LTC1844ES5-2.5#TRMPBF	LTC1844ES5-2.5#TRPBF	LTC1844ES5-2.8#PBF	LTC1844ES5-2.8#TRMPBF	LTC1844ES5-2.8#TRPBF	LTC1844ES5-3.3#PBF	LTC1844ES5-3.3#TRMPBF	LTC1844ES5-3.3#TRPBF	LTC1844ES5-BYP#TRMPBF	LTC1844ES5-BYP#TRPBF	LTC1844ES5-SD#PBF	LTC1844ES5-SD#TRMPBF	LTC1844ES5-SD#TRPBF
Demo Boards	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A	DC660A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Discrete Pass Element	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Dropout Voltage, V	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09	0.09
Export Control	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Features	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown	Shutdown
Ishutdown, µA	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Isupply, mA	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035
Max Junction Temp, Deg	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125	125
Number of Outputs	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85
Output Current, A	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15	0.15
Output Voltage	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3	Adj,1.5, 1.8, 2.5,2.8, 3.3
PSRR, dB	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50
RMS Noise, µV	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60	60
Theta JA	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)	250В°C/W (S5)
Type	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS	PMOS
Vin Max, V	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5
Vin Min, V	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6
Vout Max, V	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Vout Min, V	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25	1.25

Eco Plan

	LTC1844ES5-1.5#PBF	LTC1844ES5-1.5#TRMPBF	LTC1844ES5-1.5#TRPBF	LTC1844ES5-1.8#PBF	LTC1844ES5-1.8#TRMPBF	LTC1844ES5-1.8#TRPBF	LTC1844ES5-2.5#PBF	LTC1844ES5-2.5#TRMPBF	LTC1844ES5-2.5#TRPBF	LTC1844ES5-2.8#PBF	LTC1844ES5-2.8#TRMPBF	LTC1844ES5-2.8#TRPBF	LTC1844ES5-3.3#PBF	LTC1844ES5-3.3#TRMPBF	LTC1844ES5-3.3#TRPBF	LTC1844ES5-BYP#TRMPBF	LTC1844ES5-BYP#TRPBF	LTC1844ES5-SD#PBF	LTC1844ES5-SD#TRMPBF	LTC1844ES5-SD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

Download
Efficient, Flexible Boost Converter Fits into Charge-Pump Footprint &mdash LT Journal
PDF, 180 Kb, File published: Feb 1, 2004
Extract from the document
DESIGN IDEAS Efficient, Flexible Boost Converter Fits
into Charge-Pump Footprint by Eddy Wells
Introduction Handheld devices often use low
power step-up DC/DC converters to
power displays, LEDs and I/O circuitry, or to charge alternate power
sources. Capacitive charge-pumps
or inductor-based boost converters
are the two most common solutions
to step-up conversion, and each has
certain advantages and trade-offs. A
charge-pump converter offers a simple,
compact solution, but it has a limited
range of VIN to VOUT ratios, such as 3.3V
to 5V. A traditional boost converter
offers more efficient operation and a
greater range of step-up ratios, but
boost solutions typically take more
space, and systems issues such as
inrush current and short circuit protection are often solved with added
external circuitry.
The LTC3459 is a small, synchronous boost converter that addresses
many issues found in a traditional
boost converter. The LTC3459 offers Burst Mode operation for high …
Download
Power Supply Tracking for Linear Regulators &mdash LT Journal
PDF, 267 Kb, File published: Mar 25, 2005
Extract from the document
DESIGN FEATURES Power Supply Tracking for
Linear Regulators
Introduction (see вЂњVersatile Power Supply Tracking
without MOSFETsвЂќ from Linear Technology Magazine, February, 2004 ) but
it is easily adapted to linear regulators,
including popular low-dropout (LDO)
types. Summarized here are several
techniques for controlling linear regulators with the LTC2923. The LTC2923 provides simple and
versatile control over the power-up
and power-down behavior of switching
power supplies. It allows several supplies to track the voltage of a master
supply, so that their relative voltages
meet the stringent speciп¬Ѓcations for
the power up of modern digital
semiconductors, such as DSPs, microprocessors, FPGAs and ASICs. The
LTC2923 is speciп¬Ѓcally designed to
work with switching power supplies Monolithic Regulators
Table 1 lists three popular monolithic
linear regulators that have been tested
with the LTC2923. Using these three Table 1. New monolithic linear regulators Regulator IOUT(MAX) (V) VIN(MIN) (V) VIN(MAX) (V) VDROPOUT (V) LT3020 100mA 0.9 10 0.15 LTC1844 150mA 1.6 6.5 0.11 LTC3025 300mA 0.9 5.5 0.045 3.3V IN
2.2ВµF 3.3V CGATE
0.1ВµF 0.1ВµF
VCC GATE OFF ON ON SHDN …

Model Line

Series: LTC1844 (20)

LTC1844ES5-1.5#PBF LTC1844ES5-1.5#TRMPBF LTC1844ES5-1.5#TRPBF LTC1844ES5-1.8#PBF LTC1844ES5-1.8#TRMPBF LTC1844ES5-1.8#TRPBF LTC1844ES5-2.5#PBF LTC1844ES5-2.5#TRMPBF LTC1844ES5-2.5#TRPBF LTC1844ES5-2.8#PBF LTC1844ES5-2.8#TRMPBF LTC1844ES5-2.8#TRPBF LTC1844ES5-3.3#PBF LTC1844ES5-3.3#TRMPBF LTC1844ES5-3.3#TRPBF LTC1844ES5-BYP#TRMPBF LTC1844ES5-BYP#TRPBF LTC1844ES5-SD#PBF LTC1844ES5-SD#TRMPBF LTC1844ES5-SD#TRPBF

Manufacturer's Classification

Power Management > LDO Linear Regulators > Positive Linear Regulators (LDO)