LT3796LT3796-1 Series

100V Constant-Current and Constant-Voltage Controller with Dual Current Sense

Catalog

100V Constant-Current and Constant-Voltage Controller with Dual Current Sense

Part	Current - Output / Channel	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Min) [Min]	Dimming	Voltage - Supply (Max) [Max]	Supplier Device Package	Frequency [Min]	Frequency [Max]	Package / Case	Package / Case	Package / Case [y]	Topology	Number of Outputs	Mounting Type	Type	Package / Case [custom]	Package / Case [x]
Analog Devices LT3796IFE-1	10 A	-40 °C	125 ¯C	6 V	Analog PWM	100 V	24-TSSOP	100 kHz	1 MHz	0.173 in	24-TSSOP Exposed Pad	4.4 mm	SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller
Analog Devices LT3796HFE	10 A	-40 °C	150 °C	6 V	Analog PWM	100 V	24-TSSOP	100 kHz	1 MHz	0.173 in	24-TSSOP Exposed Pad	4.4 mm	SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller
Analog Devices LT3796EFE-1#PBF		-40 °C	125 ¯C	6 V	Analog PWM	100 V	28-TSSOP-EP	100 kHz	1 MHz		28-TSSOP Exposed Pad		SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller	4.4 mm	0.173 in
Analog Devices LT3796EFE-1	10 A	-40 °C	125 ¯C	6 V	Analog PWM	100 V	24-TSSOP	100 kHz	1 MHz	0.173 in	24-TSSOP Exposed Pad	4.4 mm	SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller
Analog Devices LT3796HFE#PBF		-40 °C	150 °C	6 V	Analog PWM	100 V	28-TSSOP-EP	100 kHz	1 MHz		28-TSSOP Exposed Pad		SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller	4.4 mm	0.173 in
Analog Devices LT3796IFE#TRPBF		-40 °C	125 ¯C	6 V	Analog PWM	100 V	28-TSSOP-EP	100 kHz	1 MHz		28-TSSOP Exposed Pad		SEPIC Step-Down (Buck) Step-Up (Boost)	1	Surface Mount	DC DC Controller	4.4 mm	0.173 in

Catalog

100V Constant-Current and Constant-Voltage Controller with Dual Current Sense

Key Features

• 3000:1 True Color PWM™Dimming

• Wide Input Voltage Range: 6V to 100V

• Current Monitoring Up to 100V

• High Side PMOS Disconnect and PWM Switch Driver

• Constant-Current and Constant-Voltage Regulation

• Dual Current Sense Amplifiers with Reporting

• C/10 Detection for Battery and SuperCap Charging

• Linear Current Sense Threshold Programming

• Short-Circuit Protection

• Adjustable Frequency: 100kHz to 1MHz

• Frequency Synchronization (LT3796)

• Independent Top Gate Enable Pin (LT3796-1)

• Programmable Open LED Protection withVMODEFlag

• Programmable Undervoltage Lockout with Hysteresis

• Soft-Start with Programmable Fault Restart Timer

• Available in 28-Lead TSSOP Package

Description

The LT3796/LT3796-1 are DC/DC controllers designed to regulate a constant-current or constant-voltage and are ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation over a wide range of supply and output voltages. Two ground referred voltage FB pins serve as the input for several LED protection features, and also allow the converter to operate as a constant-voltage source. The LT3796/LT3796-1 feature a programmable threshold output current sense amplifier with rail-to-rail common mode range. A separate high side amplifier is gain configurable with two resistors and can be used to regulate a second current or a voltage in combination with one of the FB pins. The PWM input provides LED dimming ratios of up to 3000:1.The LT3796-1 is optimized for a second output current regulation loop that can be enabled/disabled with a PMOS switch, either to drive a second LED string or to extend analog dimming range.ApplicationsHigh Power LED, High Voltage LED, Dual StringBattery and SuperCap ChargersAccurate Current Limited Voltage Regulators