NCP6335FFCT2G 查看數據表（PDF） - ON Semiconductor
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NCP6335FFCT2G Datasheet PDF : 30 Pages
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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
A2
Input
VSEL A1
Power Fail
B3
Interrupt
B2
Processor I@C SDA
B1
Control Interface
SCL
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
PIN OUT
1
2
3
4
A
VSEL
EN
SCL
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
1
April, 2014 − Rev. 5
Publication Order Number:
NCP6335/D
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