S-8337ABDC-T8T1G

Voltage - Supply (Vcc/Vdd):	1.8 V ~ 6 V
Supplier Device Package:	8-TSSOP
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable, Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	89%
Frequency - Switching:	257.4kHz ~ 1.134MHz
Series:	--
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The S-8337ABDC-T8T1G is an advanced DC-DC controller suitable for a wide range of DC-DC applications such as buck, boost, inverting, linear regulators and so on. This device excels at optimizing power efficiency and reducing power losses. Furthermore, its industry leading protection features, current limit algorithm, and MOSFET gate control enable high load current and high ripple current across a wide operating temperature range.

Application Field

The S-8337ABDC-T8T1G is suitable for various applications and DC-DC power schemes due to its wide range of operating voltages (2.8 V to 20 V) and frequency (2K Hz to 1MHz). The maximum output current capacity of the device is 4A. The primary application fields are:

• Point-of-Load (POL) regulators for FPGAs, DSPs and ASICs
• Low Voltage DC-DC converters for notebook, tablet PCs, and PDAs
• LED drivers for backlighting and display applications
• Automotive DC-DC power supplies for low voltage applications

Working Principle

The S-8337ABDC-T8T1G uses a constant on time control scheme to regulate output voltage. It also uses a circuit called a “compensator” to generate an error signal and a tracking reference to respond to sudden load changes. This device has an integrated power switch that is controlled by an internal pulse width modulation (PWM) generator. When the PWM signal is enabled, the switch is operated to allow current to pass through the inductor and the output capacitor. When the PWM signal is disabled, the switch is turned off and the current decreases. The S-8337ABDC-T8T1G provides dynamic protection features such as under-voltage lockout (UVLO), loop compensation, current limit and thermal shutdown. Furthermore, it enables dynamic adjustment of the duty cycle and frequency with an external resistor and capacitor respectively.

Conclusion

The S-8337ABDC-T8T1G is an advanced DC-DC controller suitable for a wide range of DC-DC applications. It excels at optimizing power efficiency and reducing power losses, and offers industry-leading protection features. The primary application fields of the S-8337ABDC-T8T1G include a range of point-of-load (POL) regulators, low voltage DC-DC converters, LED drivers, and automotive DC-DC supplies. The device uses a constant on time control scheme with an integrated power switch that is operated by an internal pulse width modulation (PWM) generator. The working principle of the device involves using a compensator to generate an error signal, which is then used to respond to sudden load changes. Furthermore, dynamic protection features such as under-voltage lockout (UVLO), loop compensation, current limit and thermal shutdown are also provided by this device.

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