Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F


The TCV7116FN / TCV7117F is a single chip DC-DC converter IC which can generate a low voltage, such as 1.2V, from a power line such as 5V or 3.3V. Thanks to the inclusion of a high-speed, low ON-resistance power MOSFET as well as voltage control of the MODE pin, the TCV7116FN / TCV7117F can switch between continuous PWM mode and pulse-skip mode, achieving high efficiency across a wide output current range.

The package photograph of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F.

Features

  • Switching between continuous PWM mode and pulse-skip mode enables high efficiency in a wide output current range.
  • Operating input voltage: VIN = 2.7V to 5.6V, variable output voltage: VFB = 0.8V ±1% (at Tj = 0 to 85°C)
  • High efficiency: η = 95% (typ.) where VIN = 5V, VOUT = 3.3V, and IOUT = 0.7A (MODE = H, continuous PWM mode)
  • Low ON-resistance: RDS(ON) = 0.18Ω/0.12Ω (typ.) at high-side/low-side, where VIN = 5V and Tj = 25°C
  • Oscillatory frequency: fOSC = 550kHz (typ.)
  • Due to the employment of the internal phase compensation method, the TCV7116FN / TCV7117F can make possible a high-efficiency power supply while only requiring a small number of external components.
  • Other functions: Soft start (fixed), overcurrent protection, thermal shutdown, and low-voltage protection.
Efficiency Characteristics
The illustration of Efficiency Characteristics of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F.

Uses

  • LCD TVs, DVD/Blu-ray recorders, set-top boxes, OA equipment, entertainment devices, industrial devices, etc.

Outline Drawing / Pin connection / Block Diagram

Pin connection
The illustration of Pin connection of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F.

Pin No. Symbol Description
1 PGND Ground pin for the output section
2 VIN1 Input pin for the output section
3 VIN2 Input pin for the control section
4 SGND Ground pin for the control section
5 VFB Feedback pin
6 MODE Pin for switching mode
7 EN Enable pin
8 LX Switching pin
Block diagram
The illustration of Block diagram of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F.

Circuit Example

A typical application example in which a low-ESR electrolytic capacitor or ceramic capacitor is used for COUT
The illustration of Circuit Example of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F.

Main Specifications

Main Specifications of Single Chip Voltage Step Down DC-DC Converter IC: TCV7116FN, TCV7117F
Part number Function Output
Current
(A)
Operating
Input
voltage
(V)
Output
voltage
(V)
Switching
frequency
(kHz)
Phase
compensation
circuit
Function Package
Sync
rectification
Soft
Start
TCV7116FN Step
down
2.5 2.7 to 5.6 Variable
(VFB=0.8V±1%)
550 Built in Yes Fixed PS-8
TCV7117F 3.0 SOP
Advance

Contacts

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