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NCP6335

更新时间： 2024-11-27 01:09:35
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
30页 1951K
描述
Configurable 4.0 A Step Down Converter - Transient Load Helper

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NCP6335 数据手册

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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.  
http://onsemi.com  
WLCSP20  
CASE 568AG  
MARKING DIAGRAM  
Features  
6335x  
AWLYWW  
G
• 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  
x
= D1: Prototype  
= F: 3.5 A  
= D: 2.5 A (Stand−Alone)  
= Assembly Location  
A
• 3 MHz Switching Frequency with on Chip Oscillator  
WL = Wafer Lot  
= Year  
WW = Work Week  
• Uses 470 nH Inductor and 2 x 22 mF Capacitors for Optimized  
Y
Footprint and Solution Thickness  
G
= Pb−Free Package  
• PFM/PWM Operation for Optimum Increased Efficiency  
Pb−Free indicator, G or microdot (G),  
• Low 35 mA Quiescent Current  
may or may not be present  
2
• I C Control Interface with Interrupt and Dynamic Voltage Scaling  
Support  
PIN OUT  
• 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  
1
2
3
4
A
VSEL  
EN  
SCL  
FB  
PGND  
INTB*  
PGND  
PG*  
B
SDA  
PGND  
AVIN  
PVIN  
AGND  
PGND  
Typical Applications  
• Smartphones  
• Webtablets  
C
D
E
PGND  
PGND  
AVIN  
PVIN  
D1  
SW  
SW  
SW  
PVIN  
PVIN  
D2  
E1  
E2  
Core  
Supply Input  
AGND  
B4  
4.7 uF  
DCDC  
4.0 A  
Thermal  
Protection  
470 nH  
D3  
D4  
E3  
E4  
SW  
SW  
Enable Control EN  
A2  
A1  
Modular  
Driver  
Operating  
Input  
2x 22 uF  
VSEL  
C1  
C2  
C3  
C4  
PGND  
(Top View)  
*Optional  
Output  
B3  
B2  
B1  
A3  
Power Fail  
Interrupt  
Monitoring  
FB  
A4  
DCDC  
3 MHz  
Controller  
Processor  
Core  
SDA  
SCL  
Processor I@C  
I@C  
Sense  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 29 of  
Control Interface  
this data sheet.  
Figure 1. Typical Application Circuit  
© Semiconductor Components Industries, LLC, 2014  
1
Publication Order Number:  
April, 2014 − Rev. 5  
NCP6335/D  
1234567...30

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