NCV6334BMTAATBG Datasheet NCV6334BMTAATBG | P1-P3

November, 2012 − Rev. 3

1 Publication Order Number:

NCV6334B/D

NCV6334B

3MHz, 2A Synchronous

Buck Converter

High Efficiency, Low Ripple, Adjustable

Output Voltage

The NCV6334B, a family of synchronous buck converters, which is

optimized to supply different sub systems of portable applications

batteries. The devices are able to deliver up to 2 A on an external

adjustable voltage. Operation with 3 MHz switching frequency allows

employing small size inductor and capacitors. Input supply voltage

feedforward control is employed to deal with wide input voltage

range. Synchronous rectification and automatic PWM/PFM power

save mode offer improved system efficiency. The NCV6334B is in a

space saving, low profile 2.0 x 2.0 x 0.75 mm WDFN−8 package.

Features

• 2.3 V to 5.5 V Input Voltage Range

• External Adjustable Voltage

• Up to 2 A Output Current

• 3 MHz Switching Frequency

• Synchronous Rectification

• Automatic Power Save

• Enable Input

• Power Good Output Option

• Soft Start

• Over Current Protection

• Active Discharge When Disabled

• Thermal Shutdown Protection

• WDFN−8, 2 x 2 mm, 0.5 mm Pitch Package

• Maximum 0.8 mm Height for Super Thin Applications

• This is a Pb−Free Device

Typical Applications

• Cellular Phones, Smart Phones, and PDAs

• Portable Media Players

• Digital Still Cameras

• Wireless and DSL Modems

• USB Powered Devices

• Point of Load

• Game and Entertainment System

WDFN8

CASE 511BT

MARKING

DIAGRAM

http://onsemi.com

AM = Specific Device Code

M = Date Code

G = Pb−Free Package

AM MG

(*Note: Microdot may be in either location)

PINOUT

4FB

3AGND

5EN

AVIN

1PGND

8 PVIN

(Top View)

See detailed ordering, marking and shipping information in the

package dimensions section on page 2 of this data sheet.

ORDERING INFORMATION

NCV6334B

http://onsemi.com

1uH

Vo = 0.6V to Vin

Cout

10uF

PGND

PVIN

AGND

AVIN

Cin

10uF

Rpg

Vin = 2.3V to 5.5V

Power Good

Enable

Cfb

NCV6334B

Power Good Output

Figure 1. Typical Application Circuits

PIN DESCRIPTION

Pin Name Type Description

1 PGND Power

Ground

Power Ground for power, analog blocks. Must be connected to the system ground.

2 SW Power

Output

Switch Power pin connects power transistors to one end of the inductor.

3 AGND Analog

Ground

Analog Ground analog and digital blocks. Must be connected to the system ground.

4 FB Analog

Input

Feedback Voltage from the buck converter output. This is the input to the error amplifier. This pin

is connected to the resistor divider network between the output and AGND.

5 EN Digital

Input

Enable of the IC. High level at this pin enables the device. Low level at this pin disables the

device.

6 PG Digital

Output

PG pin is for NCV6334B with Power Good option. It is open drain output. Low level at this pin

indicates the device is not in power good, while high impedance at this pin indicates the device is

in power good.

7 AVIN Analog

Input

Analog Supply. This pin is the analog and the digital supply of the device. An optional 1 mF or lar-

ger ceramic capacitor bypasses this input to the ground. This capacitor should be placed as close

as possible to this input.

8 PVIN Power

Input

Power Supply Input. This pin is the power supply of the device. A 10 mF or larger ceramic capacit-

or must bypass this input to the ground. This capacitor should be placed as close a possible to

this input.

9 PAD Exposed

Pad

Exposed Pad. Must be soldered to system ground to achieve power dissipation performances.

This pin is internally unconnected

ORDERING INFORMATION

Device Marking Package Shipping

†

NCV6334BMTAATBG AM WDFN8

(Pb−Free)

3000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

NCV6334B

http://onsemi.com

PWM / PFM

Control

Reference

Voltage

Cout

1uH

10uF

Logic Control

Current Limit

Thermal

Shutdown

Cin

10uF

Rpg

UVLO

Vin

Power Good

Enable

PVIN

PGND

MODE/PG

AVIN

AGND

Cfb

MODE

Error

Amp

Figure 2. Functional Block Diagram

MAXIMUM RATINGS

Rating Symbol

Value

Unit

Min Max

Input Supply Voltage to GND V

PVIN

, V

AVIN

−0.3 7.0 V

Switch Node to GND V

−0.3 7.0 V

EN, PG to GND V

, V

−0.3 7.0 V

FB to GND V

−0.3 2.5 V

Human Body Model (HBM) ESD Rating (Note 1) ESD HBM 2000 V

Machine Model (MM) ESD Rating (Note 1) ESD MM 200 V

Latchup Current (Note 2) I

−100 100 mA

Operating Junction Temperature Range (Note 3) T

−40 125 °C

Operating Ambient Temperature Range T

−40 85 °C

Storage Temperature Range T

STG

−55 150 °C

Thermal Resistance Junction−to−Top Case (Note 4)

12 °C/W

Thermal Resistance Junction−to−Board (Note 4)

30 °C/W

Thermal Resistance Junction−to−Ambient (Note 4)

62 °C/W

Power Dissipation (Note 5) P

1.6 W

Moisture Sensitivity Level (Note 6) MSL 1 −

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. This device series contains ESD protection and passes the following tests:

Human Body Model (HBM) ±2.0 kV per JEDEC standard: JESD22−A114.

Machine Model (MM) ±200 V per JEDEC standard: JESD22−A115.

2. Latchup Current per JEDEC standard: JESD78 Class II.

3. The thermal shutdown set to 160°C (typical) avoids potential irreversible damage on the device due to power dissipation.

4. The thermal resistance values are dependent of the PCB heat dissipation. Board used to drive these data was an 80 x 50 mm NCP6334EVB

board. It is a multilayer board with 1 once internal power and ground planes and 2−once copper traces on top and bottom of the board. If

the copper trances of top and bottom are 1 once too, R

= 11°C/W, R

= 30°C/W, and R

= 72°C/W.

5. The maximum power dissipation (PD) is dependent on input voltage, maximum output current and external components selected.

6. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P14

NCV6334BMTAATBG

Mfr. #:

Buy NCV6334BMTAATBG

Manufacturer:

ON Semiconductor

Description:

Switching Voltage Regulators USR BUCK CONVERTER

Lifecycle:

New from this manufacturer.

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NCV6334BMTAATBG