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LT3688HFE#TRPBF - 24-TSSOP-EP

LT3688HFE#TRPBF

Active
Analog Devices

DUAL 800MA STEP-DOWN SWITCHING REGULATOR WITH POWER-ON RESET AND WATCHDOG TIMER

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Search across all available documentation for this part.

DocumentsR530 Reliability DataDatasheet+1
LT3688HFE#TRPBF - 24-TSSOP-EP

LT3688HFE#TRPBF

Active
Analog Devices

DUAL 800MA STEP-DOWN SWITCHING REGULATOR WITH POWER-ON RESET AND WATCHDOG TIMER

Deep-Dive with AI

DocumentsR530 Reliability DataDatasheet+1

Technical Specifications

Parameters and characteristics for this part

SpecificationLT3688HFE#TRPBF
Current - Output800 mA
Frequency - Switching [Max]2.1 MHz
Frequency - Switching [Min]500 kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs2
Operating Temperature [Max]150 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / Case0.173 in
Package / CaseExposed Pad, 24-TSSOP
Package / Case [y]4.4 mm
Supplier Device Package24-TSSOP
Synchronous RectifierFalse
TopologyBuck
Voltage - Input (Max) [Max]36 V
Voltage - Input (Min) [Min]3.8 V
Voltage - Output (Max)36 V
Voltage - Output (Min/Fixed)0.8 V

LT3688 Series

Dual 800mA Step-Down Switching Regulator with Power-On Reset and Watchdog Timer

PartFrequency - Switching [Min]Frequency - Switching [Max]TopologyFunctionVoltage - Output (Min/Fixed)Mounting TypeOutput TypeVoltage - Output (Max)Supplier Device PackageOutput ConfigurationNumber of OutputsSynchronous RectifierCurrent - OutputVoltage - Input (Max) [Max]Package / CaseVoltage - Input (Min) [Min]Operating Temperature [Min]Operating Temperature [Max]Package / CasePackage / Case [y]
Analog Devices
LT3688EUF#PBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-QFN (4x4)
Positive
2
800 mA
36 V
24-WFQFN Exposed Pad
3.8 V
-40 °C
125 ¯C
Analog Devices
LT3688IFE#PBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
125 ¯C
0.173 in
4.4 mm
Analog Devices
LT3688EFE
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
125 ¯C
0.173 in
4.4 mm
Analog Devices
LT3688HFE#PBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
150 °C
0.173 in
4.4 mm
Analog Devices
LT3688HFE
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
150 °C
0.173 in
4.4 mm
Analog Devices
LT3688IFE#TRPBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
125 ¯C
0.173 in
4.4 mm
Analog Devices
LT3688HFE#TRPBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
150 °C
0.173 in
4.4 mm
Analog Devices
LT3688EFE#PBF
500 kHz
2.1 MHz
Buck
Step-Down
0.8 V
Surface Mount
Adjustable
36 V
24-TSSOP
Positive
2
800 mA
36 V
24-TSSOP
Exposed Pad
3.8 V
-40 °C
125 ¯C
0.173 in
4.4 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTape & Reel (TR) 2500$ 6.60

Description

General part information

LT3688 Series

The LT3688 is an adjustable frequency (350kHz to 2.2MHz) dual monolithic step-down switching regulator with two power-on reset timers and a watchdog timer. The regulator operates off inputs up to 36V. Low ripple Burst Mode®operation maintains high efficiency at low output current while keeping output ripple below 25mV in a typical application, with input quiescent current of just 115μA. Shutdown circuitry reduces input supply current to less than 1μA while EN/UVLO is pulled low.The reset and watchdog timeout periods are both adjustable using external capacitors. Tight accuracy specifications and glitch immunity ensure reliable reset operation without false triggering. The open collectorRSTpins will pull down if the monitored output voltage drops 10% below the programmed value. The LT3688 watchdog timer monitors for watchdog falling edges grouped too close together or too far apart.The LT3688 is available in 24-Pin TSSOP and 4mm × 4mm QFN packages, each with an exposed pad for low thermal resistance.ApplicationsAutomotive Electronic Control UnitsIndustrial Power SuppliesHigh-Reliability μProcessor Systems