LTC1629CG-PG#PBF datasheet, PDF

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LTC1629CG-PG#PBF: DescriptionDC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP Tube; File Size333KB，28 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC1629CG-PG#PBF Overview

DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP Tube

LTC1629CG-PG#PBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Number of Outputs	1
Topology	Step Down
Maximum Output Current (A)	5
Maximum Switching Frequency (kHz)	360
Minimum Input Voltage (V)	4
Maximum Input Voltage (V)	36
Operating Supply Voltage (V)	4 to 36
Maximum Supply Current (mA)	0.47(Typ)
Minimum Switching Frequency (kHz)	280
Typical Switching Frequency (kHz)	310
Synchronous Rectifier	Yes
Synchronous Clock	Yes
Control Method	PWM
Programmability	No
Minimum Operating Temperature (°C)	0
Maximum Operating Temperature (°C)	85
Supplier Temperature Grade	Commercial
Packaging	Tube
Pin Count	28
Standard Package Name	SOP
Supplier Package	SSOP
Mounting	Surface Mount
Package Height	2(Max) - 0.05(Min)
Package Length	10.5(Max)
Package Width	5.6(Max)
PCB changed	28
Lead Shape	Gull-wing

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LTC1629/LTC1629-PG

PolyPhase, High Efficiency,

Synchronous Step-Down Switching Regulators

FEATURES

DESCRIPTIO

Dual Controller Operates from One to Twelve Phases

Reduces Required Input Capacitance and Power

Supply Induced Noise

Current Mode Control Ensures Current Sharing

Phase-Lockable Fixed Frequency: 150kHz to 300kHz

1.8MHz Effective Switching Frequency

True Remote Sensing Differential Amplifier

OPTI-LOOP

Compensation Reduces C

OUT

1% Output Voltage Accuracy

Power Good Output Voltage Monitor (LTC1629-PG)

Wide V

Range: 4V to 36V Operation

Very Low Dropout Operation: 99% Duty Cycle

Adjustable Soft-Start Current Ramping

Internal Current Foldback Plus Shutdown Timer

Overvoltage Soft-Latch Eliminates Nuisance Trips

Micropower Shutdown

Available in 28-Lead SSOP Package

The LTC

1629/LTC1629-PG are multiple phase, dual,

synchronous step-down current mode switching regula-

tor controllers that drive N-channel external power MOSFET

stages in a phase-lockable fixed frequency architecture.

The PolyPhase

controller drives its two output stages

out of phase at frequencies up to 300kHz to minimize the

RMS ripple currents in both input and output capacitors.

The output clock signal allows expansion for up to 12

evenly phased controllers for systems requiring 15A to

200A of output current. The multiple phase technique

effectively multiplies the fundamental frequency by the

number of channels used, improving transient response

while operating each channel at an optimum frequency for

efficiency. Thermal design is also simplified.

An internal differential amplifier provides true remote

sensing of the regulated supply’s positive and negative

output terminals as required for high current applications.

A RUN/SS pin provides both soft-start and optional timed,

short-circuit shutdown. Current foldback limits MOSFET

dissipation during short-circuit conditions when the

overcurrent latchoff is disabled. OPTI-LOOP compensa-

tion allows the transient response to be optimized over a

wide range of output capacitance and ESR values. The

LTC1629-PG includes a power good output pin that re-

places the AMPMD control pin of the LTC1629.

APPLICATIO S

Desktop Computers

Internet Servers

Large Memory Arrays

DC Power Distribution Systems

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

OPTI-LOOP and PolyPhase are trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

0.1µF

10Ω

10µF

×4

35V

CERAMIC

1µH

LTC1629-PG TG1

BOOST1

SW1

0.1µF

RUN/SS

1000pF

PGOOD

3.3k

0.47µF

BG1

PGND

SENSE1

–

TG2

×2

SGND

16k

DIFFOUT

BOOST2

SW2

BG2

0.47µF

×2

1µH

0.003Ω

EAIN

OS –

INTV

SENSE2

–

10µF

16k

OUT

: T510E108K004AS

D1, D2: UP5840

L1, L2: CEPH149-IROMC

M1, M3: IRF7811

M2, M4: IRF7809

Figure 1. High Current Dual Phase Step-Down Converter

5V TO 28V

0.003Ω

OUT

1.6V/40A

OUT

1000µF

×2

1629 TA01

LTC1629CG-PG#PBF Related Products

	LTC1629CG-PG#PBF	LTC1629CG#PBF	LTC1629CG#TRPBF	LTC1629CG-PG#TRPBF	LTC1629CG	LTC1629IG#PBF	LTC1629IG#TR	LTC1629IG#TRPBF	LTC1629IG
Description	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP Tube	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP Tube	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP T/R	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP T/R	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP Tube	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP T/R	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP T/R	DC/DC Cntrlr Single-OUT Step Down 360kHz Automotive 28-Pin SSOP
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant	Not Compliant	Compliant	Not Compliant	Compliant	Not Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active	Unconfirmed	Active	Unconfirmed	Active	Unconfirmed
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01
Number of Outputs	1	1	1	1	1	1	1	1	1
Topology	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down
Maximum Output Current (A)	5	5	5	5	5	5	5	5	5
Maximum Switching Frequency (kHz)	360	360	360	360	360	360	360	360	360
Minimum Input Voltage (V)	4	4	4	4	4	4	4	4	4
Maximum Input Voltage (V)	36	36	36	36	36	36	36	36	36
Operating Supply Voltage (V)	4 to 36	4 to 36	4 to 36	4 to 36	4 to 36	4 to 36	4 to 36	4 to 36	4 to 36
Maximum Supply Current (mA)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)	0.47(Typ)
Minimum Switching Frequency (kHz)	280	280	280	280	280	280	280	280	280
Typical Switching Frequency (kHz)	310	310	310	310	310	310	310	310	310
Synchronous Rectifier	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Synchronous Clock	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Control Method	PWM	PWM	PWM	PWM	PWM	PWM	PWM	PWM	PWM
Programmability	No	No	No	No	No	No	No	No	No
Maximum Operating Temperature (°C)	85	85	85	85	85	85	85	85	85
Supplier Temperature Grade	Commercial	Commercial	Commercial	Commercial	Commercial	Industrial	Industrial	Industrial	Industrial
Pin Count	28	28	28	28	28	28	28	28	28
Standard Package Name	SOP	SOP	SOP	SOP	SOP	SOP	SOP	SOP	SOP
Supplier Package	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)	2(Max) - 0.05(Min)
Package Length	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)	10.5(Max)
Package Width	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)	5.6(Max)
PCB changed	28	28	28	28	28	28	28	28	28
Lead Shape	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing
Packaging	Tube	Tube	Tape and Reel	Tape and Reel	-	Tube	Tape and Reel	Tape and Reel	-

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