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參數(shù)資料
| 型號： | NCP1530 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 600 mA PWM/PFM Step-Down Converter with External Synchronization Pin |
| 中文描述： | 600毫安的PWM / PFM降壓型轉換器外部同步管腳 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 133K |
| 代理商： | NCP1530 |
Semiconductor Components Industries, LLC, 2004
November, 2004 Rev. 3
1
Publication Order Number:
NCP1530/D
NCP1530
600 mA PWM/PFM
StepDown Converter with
External Synchronization Pin
The NCP1530 is a PWM/PFM nonsynchronous stepdown
(Buck) DCDC converter for usage in systems supplied from 1cell
Liion, or 2 or more cells Alkaline/NiCd/NiMH batteries. It can
operate in ConstantFrequency PWM mode or PWM/PFM mode in
which the controller will automatically switch to PFM mode
operation at low output loads to maintain high efficiency. The
switching frequency can also be synchronized to external clock
between 600 kHz and 1.2 MHz. The maximum output current is up
to 600 mA. Applying an external synchronizing signal to SYN pin
can supersede the PFM operation.
The NCP1530 consumes only 47 A (typ) of supply current
(V
OUT
= 3.0 V, no switching) and can be forced to shutdown mode by
bringing the enable input (EN) low. In shutdown mode, the regulator
is disabled and the shutdown supply current is reduced to
0.5 A (typ). Other features include builtin undervoltage lockout,
internal thermal shutdown, an externally programmable softstart
time and output current limit protection. The NCP1530 operates
from a maximum input voltage of 5.0 V and is available in a space
saving, low profile Micro8
package.
Features
PbFree Package is Available
High Conversion Efficiency, up to 92% at V
IN
= 4.3 V,
V
OUT
= 3.3 V, I
OUT
= 300 mA
CurrentMode PWM Control
Automatic PWM/PFM Mode for Current Saving at Low Output Loads
Internal Switching Transistor Support 600 mA Output Current
(V
IN
= 5.0 V, V
OUT
= 3.3 V)
High Switching Frequency (600 kHz), Support Small Size Inductor
and Capacitor, Ceramic Capacitors Can be Used
Synchronize to External Clock Signal up to 1.2 MHz
100% Duty Cycle for Maximum Utilization of the Supply Source
Programmable SoftStart Time through External Chip Capacitor
Externally Accessible Voltage Reference
BuiltIn Input Undervoltage Lockout
BuiltIn Output Overvoltage Protection
Power Saving Shutdown Mode
Space Saving, Low Profile Micro8 Package
Typical Applications
PDAs
Digital Still Camera
Cellular Phone and Radios
Portable Test Equipment
Portable Scanners
Portable Audio Systems
Micro8
DM SUFFIX
CASE 846A
1
8
PIN CONNECTIONS
http://onsemi.com
xxxx = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
MARKING
DIAGRAM
xxxx
ALYW
8
7
6
5
1
2
3
4
V
IN
SYN
SS
GND
LX
V
REF
V
OUT
EN
(Top View)
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
ORDERING INFORMATION
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1530DM25R2 | 功能描述:直流/直流開關轉換器 600mA PWM/PFM Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1530DM25R2G | 功能描述:直流/直流開關轉換器 600mA PWM/PFM Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1530DM27R2 | 功能描述:直流/直流開關轉換器 600mA PWM/PFM Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1530DM27R2G | 功能描述:直流/直流開關轉換器 600mA PWM/PFM Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| NCP1530DM30R2 | 功能描述:直流/直流開關轉換器 600mA PWM/PFM Buck RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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