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NCP1595AGEVB

P1-P3P4-P6P7-P9P10-P12P13-P13
© Semiconductor Components Industries, LLC, 2014
March, 2014 − Rev. 11
1 Publication Order Number:
NCP1595/D
NCP1595, NCP1595A,
NCP1595C
1 MHz, 1.5 A Synchronous
Buck Regulator
The NCP1595/A/C family are fixed 1 MHz, high−output−current,
synchronous PWM converters that integrate a low−resistance,
high−side P−channel MOSFET and a low−side N−channel MOSFET.
The NCP1595/A/C utilizes current mode control to provide fast
transient response and excellent loop stability. It regulates input
voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V
and is able to supply up to 1.5 A.
The NCP1595/A/C includes an internally fixed switching frequency
(F
SW), and an internal soft−start to limit inrush currents. Using the EN
pin, shutdown supply current is reduced to 3 mA maximum.
Other features include cycle−by−cycle current limiting,
short−circuit protection and thermal shutdown.
Features
• Input Voltage Range: from 4.0 V to 5.5 V
• Internal 140 mW High−Side Switching P−Channel MOSFET and
90 mW Low−Side N−Channel MOSFET
• Fixed 1 MHz Switching Frequency
• Cycle−by−Cycle Current Limiting
• Overtemperature Protection
• Internal Soft−Start
• Diode Emulation During Light Load (Disabled for NCP1595C)
• Hiccup Mode Short−Circuit Protection
• Start−up with Pre−Biased Output Load
• Adjustable Output Voltage Down to 0.8 V
• These are Pb−Free Devices
Applications
• DSP Power
• Hard Disk Drivers
• Computer Peripherals
• Home Audio
• Set−Top Boxes
• Networking Equipment
• LCD TV
• Wireless and DSL/Cable Modem
• USB Power Devices
Device Package Shipping
†
ORDERING INFORMATION
NCP1595MNR2G
DFN6
(Pb−Free)
3000 / Tape & Reel
NCP1595MNT2G
DFN6
CASE 506AH
MARKING
DIAGRAM
http://onsemi.com
1
XXXXX = N1595, 1595A, 1595C
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
†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.
NC
VCC
VCCP
FB
GND
LX
1
2
3
6
5
4
NCP1595/NCP1595C
EN
VCC
VCCP
FB
GND
LX
1
2
3
6
5
4
NCP1595A
PIN CONNECTIONS
NCP1595AMNR2G
NCP1595AMNTWG
(Note: Microdot may be in either location)
XXXXX
ALYWG
G
NCP1595CMNTWG
NCP1595, NCP1595A, NCP1595C
http://onsemi.com
2
BLOCK DIAGRAM
Figure 1. Block Diagram
−
+
+
+
−
Soft−Start
Power Reset
UVLO
THD
Hiccup
gm
PWM Control
Logic
OSC
+
−
CA
+
NCP1595/A/C
VCCP
LX
GND
VCC
NC/EN
FB
Vref
PMOS
M1
PIN DESCRIPTIONS
Pin No Symbol Description
1 FB Feedback input pin of the Error Amplifier. Connect a resistor divider from the converter’s output
voltage to this pin to set the converter’s output voltage.
2 GND Ground pin. Connect to thermal pad.
3 LX The drains of the internal MOSFETs. The output inductor should be connected to this pin.
4 V
CCP
Power input for the power stage
5 V
CC
Input supply pin for internal bias circuitry. A 0.1 mF ceramic bypass capacitor is preferred to connect
to this pin.
6
NC No connection for NCP1595 or NCP1595C
EN Logic input to enable the part. Logic high to turn on the part and logic low to shut off the part.
An internal pullup forces the part into an enable state when no external bias is present on the pin.
For NCP1595A only
EP PAD Exposed pad of the package provides both electrical contact to the ground and good thermal contact
to the PCB. This pad must be soldered to the PCB for proper operation.
NCP1595, NCP1595A, NCP1595C
http://onsemi.com
3
APPLICATION CIRCUIT
Figure 2. NCP1595/A/C
VCCP
VCC
NC/EN
LX
GND
FB
V
in
4.0 V − 5.5 V
V
out
ABSOLUTE MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Pin (Pin 4, 5) to GND V
in
6.5
−0.3 (DC)
−1.0 (t < 100 ns)
V
LX to GND LX V
in
+ 0.7
V
in
+ 1.0 (t < 20 ns)
−0.7 (DC)
−5.0 (t < 100 ns)
V
All other pins 6.0
−0.3 (DC)
−1.0 (t < 100 ns)
V
Operating Temperature Range TA −40 to +125 °C
Junction Temperature TJ −40 to +150 °C
Storage Temperature Range TS −55 to +150 °C
Thermal Resistance Junction−to−Air (Note 1) RqJA 68.5 °C/W
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. R
qJA measured on approximately 1x1 inch sq. of 1 oz. Copper.
P1-P3P4-P6P7-P9P10-P12P13-P13

NCP1595AGEVB

Mfr. #:
Buy NCP1595AGEVB
Manufacturer:
ON Semiconductor
Description:
Power Management IC Development Tools NCP1595AMNR2G EVM P/N
Lifecycle:
New from this manufacturer.
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