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What is NCP1596?

This electronic component, produced by the manufacturer "ON Semiconductor", performs the same function as "1.5 MHz Current Mode PWM Buck Down Converter".


NCP1596 Datasheet PDF - ON Semiconductor

Part Number NCP1596
Description 1.5 MHz Current Mode PWM Buck Down Converter
Manufacturers ON Semiconductor 
Logo ON Semiconductor Logo 


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NCP1596, NCP1596A
Product Preview
1.5 A, 1.5 MHz Current
Mode PWM Buck Down
Converter
The NCP1596/NCP1596A is a current mode PWM buck converter
with integrated power switch. It can provide up to 1.5 A output current
with high conversion efficiency. High frequency PWM control
scheme can provide a low output ripple noise. Thus, it allows the
usage of small size passive components to reduce the board space. In a
low load condition, the controller will automatically change to PFM
mode which provides a higher efficiency at low load. Additionally, the
device includes softstart, thermal shutdown with hysteresis,
cyclebycycle current limit, and short circuit protection. This device
is available in a compact 3x3 DFN package.
Features
High Efficiency up to 90%, 1 A @ 3.3 V, 75% @ 1.2 V
Fully Internal Compensation
Low Output Voltage Ripple, 20 mV Typical
±1.5% Reference Voltage
High PWM Switching Frequency, 1.5 MHz
Automatic PWM / PFM Switchover at Light Load
Builtin 1 ms Digital Soft Start
Cyclebycycle Current Limit
Thermal Shutdown with Hysteresis
Internal UVLO Protection
Ext. Adjustable Output Voltage
Low Profile and Minimum External Components
Designed for use with Ceramic Capacitor
Compact 3x3 DFN Package
These are PbFree Devices
Typical Applications
Hard Disk Drives
USB Power Device
Wireless and DSL Modems
http://onsemi.com
1
6 PIN DFN 3x3
MN SUFFIX
CASE 506AH
MARKING DIAGRAMS
1 N1596
ALYW
G
1 1596A
ALYW
G
N1596/1596A = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbFree Package
PIN CONNECTIONS
FB
GND
LX
1596
NC
VCC
VCCP
FB
GND
LX
(Top View)
EN
VCC
VCCP
1596A
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2009
March, 2009 Rev. P3
1
Publication Order Number:
NCP1596/D

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NCP1596 equivalent
VIN
VOUT
NC
NCP1596, NCP1596A
3.8 V
3.5 V
1 ms
TIME 1 ms/div
EN 1.8 V
TIME 1 ms/div
0.4 V
Figure 3. Timing Diagram
Power up the
device
VCC > 3 V
Enable the
internal Vref
VCC > UVLO
YES
NO Disable the
Oscillator,
OTA and driver
YES
Enable
Oscillator,
OTA and
driver
Ramp up
Soft start
(1 ms)
YES
Temperature
<
130 deg
NO
YES
VCC
<
UVLO
Normal
Operation
Current Limit
> 2.5 A
Temperature
>
160 deg
YES
Figure 4. State Diagram
http://onsemi.com
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for NCP1596 electronic component.


Information Total 12 Pages
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