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AN_SYR837 / SYR838 应用手册,SYR837的技术规格书
资料介绍
SYR837的技术规格书,供大家参考。
部分文件列表
文件名 | 大小 |
AN_SYR837_8_瑞芯微.pdf | 2M |
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(完整内容请下载后查看)Application Note: AN_SYR837/SYR838
High Efficiency 5.5V, 6A, 2.4MHz
I2C Programmable, Synchronous Step Down Regulator
General Description
Features
SYR837/SYR838 is a high efficiency 2.4MHz synchronous
step down DC/DC regulator IC capable of delivering up to
6A output currents. It can operate over a wide input voltage
range from 2.6V to 5.5V and integrate main switch and
synchronous switch with very low RDS (ON) to minimize the
conduction loss. The output voltage can be programmed
from 0.7125V to 1.5V through I2C interface.
•
•
Input voltage range: 2.6V to 5.5V
2.4 MHz switching frequency minimizes the external
components
•
•
Typical 65uA quiescent current
Low RDS(ON) for internal switches (PFET/NFET):
28mΩ/17mΩ
•
Programmable Output Voltage: 0.7125V to 1.5V in
12.5mV steps
SYR837/SYR838 is in a space saving, low profile
CSP1.56*1.96-20 package.
•
•
6A continuous output current capability.
Capable for 0.25uH inductor and 22uF Ceramic
Capacitor
Ordering Information
•
•
•
Hic-cup mode protection for hard short condition
RoHS Compliant and Halogen Free
SYR837/8
(
)
□ □□ □
Compact package: CSP1.56*1.96-20
Temperature Code
Package Code
Optional Spec Code
Applications
•
Smart-phone
Ordering Number
SYR837PKC
Package Type
CSP1.56*1.96-20
CSP1.56*1.96-20
Note
0x40H
0x41H
•
Web-tablets
SYR838PKC
Typical Applications
L1:0.25uH
VOUT
VIN:2.6~5.5V
VIN
LX
CIN
22uF/6.3V
COUT
22uF/6.3V
K2
K1
VOUT
VSEL
EN
SCL
SDA
R1
1MΩ
R2
1MΩ
GND AGND
Figure 1. Schematic Diagram
Figure2. Efficiency
AN_SYR837/SYR838 Rev.0.9
Silergy Corp. Confidential-Prepared for Customer Use Only
1
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