EEWORLDEEWORLDEEWORLD

Part Number

Search

XC9237E40DEL-G

Description
Switching Regulator/Controller
CategoryPower/power management    The power supply circuit   
File Size864KB,32 Pages
ManufacturerTOREX
Websitehttp://www.torex.co.jp/chinese/
Environmental Compliance
Download Datasheet Parametric View All

XC9237E40DEL-G Overview

Switching Regulator/Controller

XC9237E40DEL-G Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid109128594
package instruction,
Reach Compliance Codecompliant
Country Of OriginJapan
ECCN codeEAR99
YTEOL2
Humidity sensitivity level1
Peak Reflow Temperature (Celsius)260
Maximum time at peak reflow temperature10
XC9235/XC9236/XC9237
Series
600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
ETR0514-009
The XC9235/XC9236/XC9237 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.42Ω
P-channel driver transistor and 0.52ΩN-channel switching transistor, designed to allow the use of ceramic capacitors. Operating
voltage range is from 2.0V to 6.0V (A∼C types), 1.8V to 6.0V (D∼G types). For the D/F types which have a reference voltage
of 0.8V (accuracy:
±2.0%),
the output voltage can be set from 0.9V by using two external resistors. The A/B/C/E/G types have
a fixed output voltage from 0.8V to 4.0V in increments of 0.05V (accuracy:
±2.0%).
The device provides a high efficiency, stable
power supply with an output current of 600mA to be configured using only a coil and two capacitors connected externally.
With the built-in oscillator, ether 1.2MHz or 3.0MHz can be selected for suiting to your particular application. As for operation
mode, the XC9235 series is PWM control, the XC9236 series is automatic PWM/PFM switching control and the XC9237 series
can be manually switched between the PWM control mode and the automatic PWM/PFM switching control mode, allowing fast
response, low ripple and high efficiency over the full range of loads (from light load to heavy load).
The soft start and current control functions are internally optimized. During stand-by, all circuits are shutdown to reduce current
consumption to as low as 1.0μA or less. The B/F/G types have a high speed soft-start as fast as 0.25ms in typical for quick
turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when
input voltage becomes 1.4V or lower.
The B to G types integrate C
L
auto discharge function which enables the electric charge at the output capacitor C
L
to be
discharged via the internal auto-discharge switch located between the L
X
and V
SS
pins. When the devices enter stand-by mode,
output voltage quickly returns to the V
SS
level as a result of this function.
Two types of package SOT-25 (A/B/C types only) and USP-6C are available.
■GENERAL
DESCRIPTION
☆GreenOperation
Compatible
■APPLICATIONS
●Mobile
phones, Smart phones
●Bluetooth
headsets
●Mobile
WiMAX PDAs, MIDs, UMPCs
●Portable
game consoles
●Digital
cameras, Camcorders
●MP3
Players, Portable Media Players
●Notebook
computers
■FEATURES
P-ch Driver Transistor Built-In
N-ch Driver Transistor Built-In
Input Voltage
Output Voltage
High Efficiency
Output Current
Oscillation Frequency
Maximum Duty Cycle
Control Methods
: ON resistance 0.42Ω
: ON resistance 0.52Ω
: 2.0V ~ 6.0V (A/B/C types)
: 1.8V ~ 6.0V (D/E/F/G types)
: 0.8V ~ 4.0V
: 92% (TYP.)
: 600mA
: 1.2MHz, 3.0MHz (+15%)
: 100%
: PWM (XC9235)
PWM/PFM Auto (XC9236)
PWM/PFM Manual (XC9237)
■TYPICAL
APPLICATION CIRCUIT
●XC9235/XC9236/XC9237
A/B/C/E/G types (Output Voltage Fixed)
Soft-Start Circuit Built-In
Current Limiter Circuit Built-In (Constant Current & Latching)
Low ESR Ceramic Capacitor Compatible
Packages
: SOT-25 (A/B/C types only), USP-6C
C
L
High Speed Discharge
: B/C/D/E/F/G types
High Speed Soft Start
: B/F/G types
* Performance depends on external components and wiring on the PCB.
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●Efficiency
vs. Output Current(f
OSC
=1.2MHz, V
OUT
=1.8V)
●XC9235/XC9236/XC9237
D/F types (Output Voltage Externally Set)
Efficiency: EFFI (%)
Efficency:EFFI(%)
100
90
80
70
60
50
40
30
20
10
0
PWM/PFM Automatic Sw itching Control
VIN= 4.2V
3.6V
2.4V
PWM Control
VIN= 4.2V
3.6V
2.4V
0.1
1
10
100
1000
Output Current:IOUT(mA)
1/32
Just go---Flirt with the fourth girl... Mountain
[color=#000][font=Helvetica,] [size=5]Time flies by. The Saturday a week ago should have been the weekend, but..., yes, we are still working in the company. After 5pm, I chatted with my colleagues abo...
wajuka Talking
Please recommend: less than 5V input, 200V output DC-DC
Due to design requirements, I want to find a DC-DC with an input lower than 5V and a 200V input. Does anyone have any recommendations?...
7mofnahq Power technology
Multi-axis drone airbag
Hello everyone, my company is looking for funds and technicians to develop drone airbags, which will have a wide range of applications. If you are interested, please contact me, thank you....
airbag DIY/Open Source Hardware
Problems with connecting a 50 ohm single-ended antenna to a nrf905 through a matching network
Now we are using nrf905 to design and develop a wireless interface for a radio frequency smart card test platform. To enhance the reliability of the experiment, we designed a PCB loop differential ant...
dq043 Embedded System
Mao Zedong's daily porcelain was auctioned in Hong Kong and sold for HK$11.684 million
[float=left][font=宋体][align=center][color=#2f2f2f][/color][/align][align=left][color=#2f2f2f] On June 20, the "Hunan Embroidery and Hunan Porcelain Art Masterpieces" auction jointly organized by the H...
wangfuchong Talking
The Life Path of an Electronics Engineer (Reprinted)
Congratulations, you have chosen development engineer as your career! Sad, you have chosen development engineer as your career! The development engineers referred to in this article refer only to prog...
天使疯子 Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 157  1778  1398  1718  2366  4  36  29  35  48 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号