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부품번호 | NCP1593B 기능 |
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기능 | Synchronous Buck Regulator | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 13 페이지수
NCP1593A, NCP1593B
1 MHz, 3 A Synchronous
Buck Regulator
The NCP1593 is a fixed 1 MHz, high−output−current, synchronous
PWM converter that integrates a low−resistance, high−side P−channel
MOSFET and a low−side N−channel MOSFET. The NCP1593 utilizes
internally compensated current mode control to provide good transient
response, ease of implementation and excellent loop stability. It
regulates input voltages from 4.0 V to 5.5 V down to an output voltage
as low as 0.6 V and is able to supply up to 3 A of load current.
The NCP1593 includes an internally fixed switching frequency
(FSW), and an internal soft−start to limit inrush current. Other features
include cycle−by−cycle current limiting, 100% duty cycle operation,
short− circuit protection, power saving mode and thermal shutdown.
Features
• Wide Input Voltage Range: from 4.0 V to 5.5 V
• Internal 90 mW High−Side P−Channel MOSFET and 60 mW
Low−Side N−Channel MOSFET
• Fixed 1 MHz Switching Frequency
• Cycle−by−Cycle Current Limiting
• Hiccup Mode Short−Circuit Protection
• Overtemperature Protection
• Internal Soft−Start
• Start−up with Pre−Biased Output Load
• Adjustable Output Voltage Down to 0.6 V
• Diode Emulation During Light Load
• 100% Duty Cycle Operation to Extend the Battery Life
• These are Pb−Free Devices
Applications
• Set−Top Boxes
• DVD Drives and HDD
• LCD Monitors and TVs
• Cable Modems
• USB Modems
• Telecom/Networking/Datacom Equipment
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DFN10
CASE 485C
MARKING
DIAGRAMS
1593A
ALYWG
G
1593B
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
NC 1
LX 2
LX 3
PG 4
EN 5
GND
10 VCCP
9 VCCP
8 VCCA
7 SS
6 FB
NCP1593A
(Top View)
LX 1
LX 2
LX 3
PG 4
EN 5
GND
10 VCCP
9 VCCP
8 VCCA
7 NC
6 FB
NCP1593B
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP1593AMNTWG DFN10 3000 / Tape &
(Pb−Free)
Reel
NCP1593BMNTWG DFN10
3000 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2012
July, 2012 − Rev. 2
1
Publication Order Number:
NCP1593/D
Free Datasheet http://www.datasheet4u.com/
NCP1593A, NCP1593B
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 125°C, VCC = 4.0 V − 5.5 V, for min/max values unless noted otherwise)
Parameter
Symbol
Test Conditions
Min Typ Max
Input Voltage Range
VCC UVLO Threshold
UVLO Hysteresis
VCC Quiescent Current
VCCP Quiescent Current
Shutdown Supply Current
FEEDBACK VOLTAGE
VIN
VUVLO
VUVLO_hys
IINVCC
IINVCCP
IQSHDN
4.0 5.5
2.4 2.5 2.9
320
1.0 1.5
20 50
1.8 3.0
Reference Voltage
Reference Voltage
Feedback Input Bias Current
Feedback Voltage Line Regulation (Note 3)
PWM
VFB
VFB
IFB
TJ = 25°C
VCC = 4.0 V to 5.5 V
0.591 0.6 0.609
0.594 0.6 0.606
10 100
−65
Maximum Duty Cycle (Regulating)
Maximum Duty Cycle (LDO mode)
Minimum Controllable On Time
Current Limit
d.c.MAX
d.c.LDO
tONmin
Vout > d.c.MAX * VIN
95
100
35
Cycle-by-cycle Current Limit (Note 3) ILIM VCC = 5.0 V, TJ = 25°C
Oscillator
5.1
Switching Frequency
MOSFET’s
fSW
0.87 1.0 1.13
High-Side MOSFET On Resistance
High-Side MOSFET Leakage
Low-Side MOSFET On Resistance
Low-Side MOSFET Leakage
POWER GOOD
RDSonH
IlkgH
RDSonL
IlkgL
IDS = 100 mA, VIN = 5.0 V
LX = 0 V
IDS = 100 mA, VIN = 5.0 V
LX = 5 V
90 190
10
60 90
10
Power Good Rising Threshold
Power Good Falling Threshold
Power Good Hysteresis (High-to-Low)
Power Good Pulldown Voltage
ENABLE
VPGH
VPHL
VPGhys
VRPG
IPG = 2.5 mA
0.51 0.54
0.48 0.51
30
130 250
Enable High Threshold
Enable Low Threshold
Enable Hysteresis
Enable Pullup Current
Soft-Start
VENHI
VENLO
VENhys
IEN
1.4
0.4
200
1.4 3.0
Default Soft-start Ramp Time
Maximum Soft-start Ramp time
Hiccup Timer
Soft-start Current
Thermal Shutdown
tSS
SS = open; fSW = 1MHz
0.5 0.58 0.65
tSS SS = max cap; fSW = 1MHz
10
4 * tSS
ISS 0.51 0.7 0.87
Thermal Shutdown Threshold
185
Thermal Shutdown Hysteresis
30
3. Guaranteed by Characterization.
Unit
V
V
mV
mA
mA
mA
V
V
nA
dB
%
%
ns
A
MHz
mW
mA
mW
mA
V
V
mV
mV
V
V
mV
mA
ms
ms
ms
mA
°C
°C
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4
Free Datasheet http://www.datasheet4u.com/
4페이지 NCP1593A, NCP1593B
TYPICAL CHARACTERISTICS
(VIN = 5 V, VOUT = 1.8 V, IOUT = 0 A)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 100 mA / div
Time = 10 ms / div
Figure 15. No Load Switching (1.8 V)
(VIN = 5 V, VOUT = 3.3 V, IOUT = 0 A)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 200 mA / div
Time = 10 ms / div
Figure 16. No Load Switching (3.3 V)
(VIN = 5 V, VOUT = 1.05 V, IOUT = 100 mA)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 200 mA / div
Time = 500 ns / div
Figure 17. DCM Switching (1.05 V)
(VIN = 5 V, VOUT = 1.8 V, IOUT = 150 A)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 200 mA / div
Time = 500 ns / div
Figure 18. DCM Switching (1.8 V)
(VIN = 5 V, VOUT = 3.3 V, IOUT = 100 mA)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 200 mA / div
Time = 500 ns / div
Figure 19. DCM Switching (3.3 V)
(VIN = 5 V, VOUT = 1.8 V, IOUT = 3 A)
Upper Trace: LX Pin Switching Waveforms, 5 V / div
Middle Trace: Output Voltage, 20 mV / div
Lower Trace: Inductor Current, 2 A / div
Time = 500 ns / div
Figure 20. CCM Switching (1.8 V)
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7
Free Datasheet http://www.datasheet4u.com/
7페이지 | |||
구 성 | 총 13 페이지수 | ||
다운로드 | [ NCP1593B.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
NCP1593A | Synchronous Buck Regulator | ON Semiconductor |
NCP1593B | Synchronous Buck Regulator | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |