CXSD62393系列是带有内置高速低导通电阻驱动器的纯电压模式PWM降压DC/DC转换器控制器。通过使用外部连接的晶体管、线圈、二极管，可以获得较大的输出电流。输出电压可选择1.8、2.5V、3.3V（±2.5%）。
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产品概述 返回TOP
The CXSD62393 series are pure voltage-mode PWM step-down DC/DC converter controllers with built-in high speed low ON resistance drivers. Large output currents are possible by using an externally connected transistor, coil, diode. Output voltage is selectable for 1.8, 2.5V, 3.3V (±2.5%). For other output voltages the FB version, which has a 1V internal reference voltage, is available. With built-in UVLO function, the external switch will be forcibly switched off when used below the stipulated voltage. An internal soft start is available and the soft start time is set up internally.
产品特点 返回TOP
„ 3.3V, 2.5V, 1.8V Fixed Output or Adjustable Version
„ External PMOS Switch
„ Available in SOT-23-5 Package
„ Input Range 2.5V~5.5V
„ Output Tolerance ±2.5%
„ Oscillator Frequency 300KHz, ±15%
„ Internal Soft-Start
„ Standby Current 0.5μA (Max)
„ 1V Reference Voltage for Adjustable Version
应用范围 返回TOP
Electronics Information Organizers
„ Palmtops
„ Cellular and portable phones
„ Portable Audio Systems
„ Various Multi-function Power Supplies
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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Synchronous Step Down Controller |
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|
Part NO. |
Vin(V) min |
Vin(V) max |
IOUT (A) |
FSW (kHz) |
FB (V) |
Duty max(%) |
VOUT (ms) |
Note |
Package |
|
2.5 |
5.5 |
-- |
300 |
1 |
100 |
15 |
EXT, VDD, GND, CE, FB, Voltage Mode |
SOT-23-5 |
|
|
5 |
12 |
OCSET |
300 |
0.8 |
-- |
14 |
BST, DH, GND, DL, VCC, FB, OC, LX |
SOP-8 |
|
|
-- |
24 |
OCSET |
300 |
0.8 |
-- |
8 |
BST, DH, GND, DL, VCC, FB, OC, LX |
SOP-8 |
|
|
10 |
28 |
-- |
400 |
0.8 |
80 |
3 |
VCC, DL, GND, DH, BST, LX, VIN, FB |
TSOT-23-8 |
|
|
5 |
23 |
OCSET |
400 |
0.8 |
80 |
8 |
DH, LX, DL, GND, FB, OC, VCC, BST |
SOP-8 |
|
|
4.5 |
27 |
RSENSE |
ADJ |
0.7 |
93 |
ADJ |
Asynchronous Voltage Mode Controller |
MSOP-10(FD) |
|
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