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  ON Semiconductor Electronic Components Datasheet  

NCP6335 Datasheet

Configurable 4.0A Step Down Converter

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NCP6335
Configurable 4.0 A Step
Down Converter - Transient
Load Helper
The NCP6335 is a synchronous buck converter optimized to supply
the different sub systems of portable applications powered by one cell
Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The device is able
to deliver up to 4.0 A, with programmable output voltage from 0.6 V
to 1.4 V. It can share the same output rail with another DC−to−DC
converter and works as a transient load helper. Operation at a 3 MHz
switching frequency allows the use of small components.
Synchronous rectification and automatic PWM/PFM transitions
improve overall solution efficiency. The NCP6335 is in a space
saving, low profile 2.0 x 1.6 mm CSP−20 package.
Features
Input Voltage Range from 2.3 V to 5.5 V: Battery and 5 V Rail
Powered Applications
Programmable Output Voltage: 0.6 V to 1.4 V in 6.25 mV Steps
Modular Output Stage Drive Strength for Increased Efficiency
Depending on the Output Current
3 MHz Switching Frequency with on Chip Oscillator
Uses 470 nH Inductor and 2 x 22 mF Capacitors for Optimized
Footprint and Solution Thickness
PFM/PWM Operation for Optimum Increased Efficiency
Low 35 mA Quiescent Current
I2C Control Interface with Interrupt and Dynamic Voltage Scaling
Support
Enable Pins, Power Good/Fail Signaling
Thermal protections and Temperature Management
Transient Load Helper: Share the Same Rail with Another DCDC
Small 2.0 x 1.6 mm / 0.4 mm pitch CSP Package
These are Pb−Free Devices
Typical Applications
Smartphones
Webtablets
AGND B4
Enable Control EN
Input
VSEL
A2
A1
Power Fail
Interrupt
Processor I@C
Control Interface
SDA
SCL
B3
B2
B1
A3
Core
Thermal
Protection
Operating
Output
Monitoring
I@C
DCDC
4.0 A
Modular
Driver
DCDC
3 MHz
Controller
Sense
D1 AVIN
D2 PVIN
E1
E2
4.7 uF
D3
D4
SW
E3
E4
470 nH
2x 22 uF
C1
C2 PGND
C3
C4
A4 FB
Supply Input
Processor
Core
Figure 1. Typical Application Circuit
http://onsemi.com
WLCSP20
CASE 568AG
MARKING DIAGRAM
6335x
AWLYWW
G
x = D1: Prototype
= F: 3.5 A
= D: 2.5 A (Stand−Alone)
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
Pb−Free indicator, G or microdot (G),
may or may not be present
1
A VSEL
PIN OUT
23
EN SCL
4
FB
B SDA
PGND
INTB*
PGND
PG*
AGND
C PGND
PGND
PGND
PGND
D AVIN
PVIN
SW
SW
E PVIN
PVIN
SW
SW
(Top View)
*Optional
ORDERING INFORMATION
See detailed ordering and shipping information on page 29 of
this data sheet.
© Semiconductor Components Industries, LLC, 2014
April, 2014 − Rev. 5
1
Publication Order Number:
NCP6335/D


  ON Semiconductor Electronic Components Datasheet  

NCP6335 Datasheet

Configurable 4.0A Step Down Converter

No Preview Available !

NCP6335
SUPPLY INPUT AVIN
ANALOG GROUND AGND
POWER GOOD
(optional)
PG
ENABLE CONTROL INPUT EN
VOLTAGE SELECTION VSEL
INTERRUPT OUTPUT
(optional)
PROCESSOR I2C
CONTROL INTERFACE
INTB
SCL
SDA
Core
Thermal
Protection
Output Voltage
Monitoring
Operating
Mode Control
Logic Control
Interrupt
I2C
4.0 A
DC−DC
MODULAR
DRIVER
3 MHZ DC−DC
converter
Controller
Sense
Figure 2. Simplified Block Diagram
PVIN
PVIN POWER INPUT
PVIN
SW
SW
SWITCH NODE
SW
SW
PGND
PGND
PGND
POWER GROUND
PGND
FB FEEDBACK
http://onsemi.com
2


Part Number NCP6335
Description Configurable 4.0A Step Down Converter
Maker ON Semiconductor
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NCP6335 Datasheet PDF






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