RT6150B

Current Mode Buck-Boost Converter

The RT6150B is a current mode buck-boost converter from Richtek. View the full RT6150B datasheet below including key specifications, absolute maximum ratings.

RT6150B shares its datasheet with RT6150A, whose page lists every part number it covers.

Official RT6150B datasheet (PDF) — the source this page was extracted from.

Manufacturer

Richtek

RT6150B Key Specifications

Parameter	Value
Quiescent Current (Power Save Mode)	60 μA (typ, IOUT = 0mA, PS = 0V)
Shutdown Current	0.1 μA (typ, EN = 0V, Not Including Switch Leakage)
N-MOSFET Switch On Resistance	0.15 Ω (typ)
P-MOSFET Switch On Resistance	0.15 Ω (typ)
Switch Current Limit	1.6 A (min, VIN = 3.6V)
Oscillator Frequency	1 MHz (typ)
Feedback Voltage	0.5 V (typ, VPS = VIN)
Thermal Shutdown	140 °C (typ)

RT6150B Overview

Part: RT6150A/B from Richtek Technology Corporation

Type: Current Mode Buck-Boost Converter

Description: A high efficiency, fixed frequency Buck-Boost DC/DC converter that operates from 1.8V to 5.5V input, providing up to 800mA continuous output current with up to 90% efficiency and a 1MHz switching frequency.

Operating Conditions:

Supply voltage: 1.8V to 5.5V
Operating temperature: -40°C to 85°C (Ambient)
Junction temperature: -40°C to 125°C
Switching frequency: 1 MHz (typical)

Absolute Maximum Ratings:

Max supply voltage: 6V (VOUT, VIN, EN, PS, VINA, FB Pin)
Max junction temperature: 150°C
Max storage temperature: -65°C to 150°C

Key Specs:

Quiescent Current (Power Save Mode): 60 μA (typ, IOUT = 0mA, PS = 0V)
Shutdown Current: 0.1 μA (typ, EN = 0V, Not Including Switch Leakage)
N-MOSFET Switch On Resistance: 0.15 Ω (typ)
P-MOSFET Switch On Resistance: 0.15 Ω (typ)
Switch Current Limit: 1.6 A (min, VIN = 3.6V)
Oscillator Frequency: 1 MHz (typ)
Feedback Voltage: 0.5 V (typ, VPS = VIN)
Thermal Shutdown: 140 °C (typ)

Features:

Single Inductor
Fixed Frequency Operation with Battery Voltages
Synchronous Rectification : Up to 90% Efficiency
Up to 800mA Continuous Output Current
VOUT Disconnected from VIN during Shutdown
Power Save Mode (PSM) Enable Control
<1 μA Shutdown Current
Input Voltage Range: 1.8V to 5.5V
Fixed 3.3V and Adjustable Output Voltage Options from 1.8V to 5.5V
10-Lead WDFN Packages
RoHS Compliant and Halogen Free

Applications:

Portable Products
Handheld Instrumentation

Package:

WDFN-10L 3x3
WDFN-10L 2.5x2.5

RT6150B Features

Single Inductor
Fixed Frequency Operation with Battery Voltages
Synchronous Rectification : Up to 90% Efficiency
Up to 800mA Continuous Output Current
VOUT Disconnected from VIN during Shutdown
Power Save Mode (PSM) Enable Control
<1 μ A Shutdown Current
Input Voltage Range: 1.8V to 5.5V
Fixed 3.3V and Adjustable Output Voltage Options from 1.8V to 5.5V
10-Lead WDFN Packages
RoHS Compliant and Halogen Free

A : WDFN-10L 3x3

B : WDFN-10L 2.5x2.5

RT6150B Pin Configuration

Pin No.	Pin Name	Pin Function
1	VOUT	Output of the Buck-Boost Converter. Connect a capacitor between the VOUT and GND.
2	LX2	Second Switch Node. Connect this pin to the inductor.
3, 9, 11 (Exposed Pad)	GND	Power Ground. The exposed pad must be soldered to a large PCB and connected to GNDfor maximum power dissipation.
4	LX1	First Switch Node. Connect this pin to the inductor.
5	VIN	Power Input. Connect an at least 10 F capacitor between the VIN pin and GND.
6	EN	Enable Control Input for the Buck-Boost Converter.
7	PS	PSM Control Input. Pull low for PSM operation and pull high for fixed switching frequency operation.
8	VINA	Supply Voltage Input for Control Circuit.
10	FB	Feedback Input. For adjustable versions, connect a resistive divider to set the output voltage and it can be adjusted from 1.8V to 5.5V; For fixed version, must be connected to VOUT.

RT6150B Absolute Maximum Ratings

VOUT, VIN, EN, PS, VINA, FB Pin ------------------------------------------------------------------------------------	- 0.3V to 6V
Switch Output Voltage, LX1, LX2 Pin ----------------------------------------------------------------------------------	- 0.3V to 6V
< 10ns-------------------------------------------------------------------------------------------------------------------------	- 2V to 7.5V
PowerDissipation,P D @T A = 25 ° C WDFN-103x3	--------------------------------------------------------------------------------------------------------------- 3.28W
WDFN-102.5x2.5 ----------------------------------------------------------------------------------------------------------	2.44W
Package Thermal Resistance (Note 2) WDFN-10 3x3, θ JA ----------------------------------------------------------------------------------------------------------	30.5 ° C/W
WDFN-10 3x3, θ JC ---------------------------------------------------------------------------------------------------------	7.5 ° C/W
WDFN-10 2.5x2.5, θ JA -----------------------------------------------------------------------------------------------------	40.9 ° C/W
WDFN-10 2.5x2.5, θ JC ----------------------------------------------------------------------------------------------------	18.6 ° C/W
Lead Temperature (Soldering, 10 sec.)--------------------------------------------------------------------------------	260 ° C
Junction Temperature------------------------------------------------------------------------------------------------------	150 ° C
StorageTemperatureRange ---------------------------------------------------------------------------------------------	- 65 ° Cto150 ° C
ESD Susceptibility (Note 3) HBM(HumanBodyModel)-----------------------------------------------------------------------------------------------	2kV
MM(Machine Model) ------------------------------------------------------------------------------------------------------	200V
Recommended Operating Conditions (Note 4)
Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------ 1.8V JunctionTemperature Range---------------------------------------------------------------------------------------------	to 5.5V - 40 ° Cto125 ° C
AmbientTemperature Range---------------------------------------------------------------------------------------------	- 40 ° Cto 85 ° C

RT6150B Thermal Information

The device has a built-in temperature sensor which monitors the internal junction temperature. If the temperature exceeds the threshold, the device stops operating. As soon as the IC temperature has decreased below the threshold with a hysteresis, it starts operating again. The built-in hysteresis is designed to avoid unstable operation at IC temperatures near the over temperature threshold.

RT6150B Typical Application

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AP5726WG-7 – Diodes Incorporated, White LED Step-Up DC/DC Converter
AP5726WUG-7 – Diodes Incorporated, White LED Step-Up DC/DC Converter
BQ24195 – Texas Instruments, Battery Charger with Boost Converter
BQ24195/L – Texas Instruments, Battery Charger with Boost Converter
BQ24195LRGER – Texas Instruments, Battery Charger with Boost Converter

All Boost Converters datasheets All Richtek datasheets (17)

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