LT3028IFE datasheet, PDF - EEWORLD Datasheet

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LT3028IFE: DescriptionDual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs; CategoryPower/power management The power supply circuit; File Size336KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LT3028IFE Overview

Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs

LT3028IFE Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Parts packaging code	TSSOP
package instruction	HTSSOP, TSSOP16,.25
Contacts	16
Manufacturer packaging code	FE
Reach Compliance Code	_compli
ECCN code	EAR99
Adjustability	ADJUSTABLE
Maximum drop-back voltage 1	0.45 V
Maximum drop-back voltage 2	0.47 V
JESD-30 code	R-PDSO-G16
JESD-609 code	e0
length	5 mm
Maximum grid regulation rate (%/V)	0.046
Humidity sensitivity level	1
Number of functions	1
Output times	2
Number of terminals	16
Working temperatureTJ-Max	125 °C
Operating temperatureTJ-Mi	-40 °C
Maximum output current 1	0.1 A
Maximum output current 2	0.5 A
Maximum output voltage 1	20 V
Minimum output voltage 1	1.22 V
Maximum output voltage 2	20 V
Minimum output voltage 2	1.22 V
Package body material	PLASTIC/EPOXY
encapsulated code	HTSSOP
Encapsulate equivalent code	TSSOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Regulator type	ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR
Maximum seat height	1.1 mm
surface mount	YES
technology	BIPOLAR
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	4.4 mm
Base Number Matches	1

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LT3028

Dual 100mA/500mA

Low Dropout, Low Noise,

Micropower Regulators with

Independent Inputs

FEATURES

■

DESCRIPTIO

Low Noise: 20µV

RMS

(10Hz to 100kHz)

Low Quiescent Current: 30µA/Output

Independent Inputs

Wide Input Voltage Range: 1.8V to 20V

Output Current: 100mA/500mA

Very Low Shutdown Current: <0.1

Low Dropout Voltage: 300mV/320mV at

100mA/500mA

Adjustable Outputs from 1.22V to 20V

Stable with as Low as 1µF/3.3µF Output Capacitor

Stable with Aluminum, Tantalum or

Ceramic Capacitors

Reverse-Battery Protected

No Protection Diodes Needed

Overcurrent and Overtemperature Protected

Tracking/Sequencing Capability

Thermally Enhanced 16-Lead TSSOP and 16-Lead

(5mm

3mm) DFN Packages

APPLICATIO S

■

Cellular Phones

Pagers

Battery-Powered Systems

Frequency Synthesizers

Wireless Modems

Tracking/Sequencing Power Supplies

The LT

3028 is a dual, micropower, low noise, low drop-

out regulator with independent inputs. With an external

0.01µF bypass capacitor, output noise is a low 20µV

RMS

over a 10Hz to 100kHz bandwidth. Designed for use in

battery-powered systems, the low 30µA quiescent current

per output makes it an ideal choice. In shutdown, quies-

cent current drops to less than 0.1µA. Shutdown control

is independent for each output, allowing for flexibility in

power management. The device is capable of operating

over an input voltage range of 1.8V to 20V. Output 1 can

supply 500mA of output current with a dropout voltage of

320mV. The device can supply 100mA of output current

from Output 2 with a dropout voltage of 300mV. Quiescent

current is well controlled in dropout.

The LT3028 regulator is stable with output capacitors as

low as 1µF for the 100mA output and 3.3µF for the 500mA

output. Small ceramic capacitors can be used without the

series resistance required by other regulators.

Internal protection circuitry includes reverse-battery pro-

tection, current limiting and thermal limiting protection.

The device is available as an adjustable device with a 1.22V

reference voltage. The LT3028 regulator is available in the

thermally enhanced 16-lead TSSOP and 16-lead, low

profile (5mm

3mm

0.75mm) DFN packages.

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

Protected by U.S. Patents including 6118263, 6144250.

TYPICAL APPLICATIO

IN1

3.7V TO

20V

IN1

1µF

SHDN1

BYP1

ADJ1

LT3028

IN2

1µF

SHDN2

GND

OUT2

OUT1

3.3V/2.5V Low Noise Regulators

0.01µF

422k

10µF

3.3V AT 500mA

20µV

RMS

NOISE

10Hz to 100kHz Output Noise

249k

2.5V AT 100mA

20µV

RMS

NOISE

OUT

100µV/DIV

IN2

2.9V TO

20V

0.01µF

BYP2

ADJ2

261k

10µF

249k

3028 TA01a

20µV

RMS

3028 TA01b

3028f

LT3028IFE Related Products

	LT3028IFE	LT3028EDHC	LT3028	LT3028EFE
Description	Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs	Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs	Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs	Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulators with Independent Inputs
Brand Name	Linear Technology	Linear Technology	-	Linear Technology
Is it Rohs certified?	incompatible	incompatible	-	incompatible
Parts packaging code	TSSOP	DFN	-	TSSOP
package instruction	HTSSOP, TSSOP16,.25	HVSON, SOLCC16,.12,20	-	HTSSOP, TSSOP16,.25
Contacts	16	16	-	16
Manufacturer packaging code	FE	DHC	-	FE
Reach Compliance Code	_compli	_compli	-	_compli
ECCN code	EAR99	EAR99	-	EAR99
Adjustability	ADJUSTABLE	ADJUSTABLE	-	ADJUSTABLE
Maximum drop-back voltage 1	0.45 V	0.45 V	-	0.45 V
Maximum drop-back voltage 2	0.47 V	0.47 V	-	0.47 V
JESD-30 code	R-PDSO-G16	R-PDSO-N16	-	R-PDSO-G16
JESD-609 code	e0	e0	-	e0
length	5 mm	5 mm	-	5 mm
Maximum grid regulation rate (%/V)	0.046	0.046	-	0.046
Humidity sensitivity level	1	1	-	1
Number of functions	1	1	-	1
Output times	2	2	-	2
Number of terminals	16	16	-	16
Working temperatureTJ-Max	125 °C	125 °C	-	125 °C
Operating temperatureTJ-Mi	-40 °C	-40 °C	-	-40 °C
Maximum output current 1	0.1 A	0.1 A	-	0.1 A
Maximum output current 2	0.5 A	0.5 A	-	0.5 A
Maximum output voltage 1	20 V	20 V	-	20 V
Minimum output voltage 1	1.22 V	1.22 V	-	1.22 V
Maximum output voltage 2	20 V	20 V	-	20 V
Minimum output voltage 2	1.22 V	1.22 V	-	1.22 V
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	HTSSOP	HVSON	-	HTSSOP
Encapsulate equivalent code	TSSOP16,.25	SOLCC16,.12,20	-	TSSOP16,.25
Package shape	RECTANGULAR	RECTANGULAR	-	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	-	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235	235	-	235
Certification status	Not Qualified	Not Qualified	-	Not Qualified
Regulator type	ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR	ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR	-	ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR
Maximum seat height	1.1 mm	0.8 mm	-	1.1 mm
surface mount	YES	YES	-	YES
technology	BIPOLAR	BIPOLAR	-	BIPOLAR
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	NO LEAD	-	GULL WING
Terminal pitch	0.65 mm	0.5 mm	-	0.65 mm
Terminal location	DUAL	DUAL	-	DUAL
Maximum time at peak reflow temperature	20	20	-	20
width	4.4 mm	3 mm	-	4.4 mm

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