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NCP1596 데이터시트 PDF




ON Semiconductor에서 제조한 전자 부품 NCP1596은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 NCP1596 자료 제공

부품번호 NCP1596 기능
기능 1.5 MHz Current Mode PWM Buck Down Converter
제조업체 ON Semiconductor
로고 ON Semiconductor 로고


NCP1596 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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NCP1596 데이터시트, 핀배열, 회로
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




NCP1596 pdf, 반도체, 판매, 대치품
NCP1596, NCP1596A
PIN FUNCTION DESCRIPTIONS
Pin #
Symbol
Pin Description
NCP1596
1 FB Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-
put directly to this pin.
2
GND
Ground
3 LX Pin connected internally to power switch. Connect externally to inductor.
4
VCCP
Power connection to the power switch.
5
VCC
IC power connection.
6 NC No Connection
NCP1596A
1 FB Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out-
put directly to this pin.
2
GND
Ground
3 LX Pin connected internally to power switch. Connect externally to inductor.
4
VCCP
Power connection to the power switch.
5
VCC
IC power connection.
6 EN Device Enable pin. This pin has an internal current source pull up. No connect is enable the device. With this
pin pulled down below 0.8 V, the device is disabled and enters the shutdown mode.
NC/EN
Vin VCC
500 nA
C1
Isense
FB
Short
circuit
protect
UVLO
Thermal
Shutdown
Soft Start
0.8 V
disable
Isense
Oscillator
SQ
driver
R Q Ton(min)
VCCP
Vout = 0.8 V to 0.9 V * Vin
LX L1
D1
GND
R1
R2
C2
Figure 2. Detail Block Diagram
EXTERNAL COMPONENT REFERENCE DATA
Device
VOUT
3.3 V
Inductor Model
CDC5D23 3R3 (1 A)
CDRH6D38 3R3 (1.5 A)
Inductor (L1)
3.3 mH
NCP1596/
NCP1596A
2.5 V
1.5 V
CDC5D23 3R3 (1 A)
CDRH6D38 3R3 (1.5 A)
CDC5D23 3R3 (1 A)
CDRH6D38 3R3 (1.5 A)
3.3 mH
3.3 mH
1.2 V CDC5D23 3R3 (1 A)
CDRH6D38 3R3 (1.5 A)
3.3 mH
Diode (D1)
MBRA210LT3G
MBRA210LT3G
MBRA210LT3G
MBRA210LT3G
CIN (C1)
22 mF
22 mF x 2
22 mF
22 mF x 2
22 mF
22 mF x 2
22 mF
22 mF x 2
COUT (C2)
R1
R2
22 mF
22 mF x 2
31 k 10 k
22 mF
22 mF x 2
21 k 10 k
22 mF
22 mF x 2
8 k 10 k
22 mF
22 mF x 2
5 k 10 k
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NCP1596 전자부품, 판매, 대치품
NCP1596, NCP1596A
1.5
1.0
0.5
VIN = 5.0 V
0.0
0.5
VOUT = 3.3 V
VIN = 4.0 V
1.0
L = 3.3 mH
CIN = 22 mF
1.5 COUT = 22 mF
1
10
100
1000
10000
OUTPUT CURRENT
Figure 11. Output Voltage Change vs. Output
Current
100
VIN = 4.0 V
90
80
VIN = 5.0 V
70
60
50
40
30
10
VOUT = 3.3 V
L = 3.3 mH
CIN = 22 mF
COUT = 22 mF
100
1000
10000
OUTPUT CURRENT
Figure 12. Efficiency vs. Output Current
1.5
1.0
0.5
0.0
0.5
1.0
1.5
1
VIN = 5.0 V
VIN = 4.0 V
VOUT = 1.8 V
L = 3.3 mH
CIN = 22 mF
COUT = 22 mF
10 100 1000
OUTPUT CURRENT
10000
Figure 13. Output Voltage Change vs.
Output Current
100
90 VIN = 4.0 V
80 VIN = 5.0 V
70
60
50
40
3010
VOUT = 1.8 V
L = 3.3 mH
CIN = 22 mF
COUT = 22 mF
100
1000
10000
OUTPUT CURRENT
Figure 14. Efficiency vs. Output Current
1.5
1.0
0.5
VIN = 5.0 V
0.0
0.5
1.0
1.5
1
VOUT = 1.2 V
L = 3.3 mH
CIN = 22 mF
COUT = 22 mF
VIN = 4.0 V
10
100
1000
10000
OUTPUT CURRENT
Figure 16. Output Voltage Change vs.
Output Current
100
90
VIN = 4.0 V
80
70 VIN = 5.0 V
60
50
40
3010
VOUT = 1.2 V
L = 3.3 mH
CIN = 22 mF
COUT = 22 mF
100 1000
OUTPUT CURRENT
10000
Figure 15. Efficiency vs. Output Current
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