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NCP1512 PDF даташит

Спецификация NCP1512 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «PWM Buck Converter».

Детали детали

Номер произв NCP1512
Описание PWM Buck Converter
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCP1512 Даташит, Описание, Даташиты
NCP1512
Advance Information
PWM Buck Converter with a
Very Low Iq During Low
Load Conditions
The NCP1512 is a tri-mode regulator that operates either as a
Synchronized PWM Buck Converter, PWM Buck Converter with
internal oscillator or as a Pulsed Switching Regulator. If a
synchronization signal is present, the NCP1512 operates as a current
mode PWM converter with synchronous rectification. The optional
external frequency input signal allows the user to control the location
of the spurious frequency noise generated by a PWM converter. The
Pulsed Switching Regulator mode is active when the Sync Pin is
Low. The Pulsed Mode is an extremely low quiescent current Buck
Converter. NCP1512 operates in a PWM mode with an internal
oscillator when the Sync Pin is held high. The NCP1512
configuration allows the flexibility of efficient high power operation
and low input current during system sleep modes.
Features
Synchronous Rectification for Higher Efficiency in PWM Mode
Pulsed Switching Mode Operation for Low Current Consumption at
Low Loads
Integrated MOSFETs and Feedback Circuits
Cycle -by-Cycle Current Limit
Automatic Switching Between PWM, with External or Internal
Oscillator, and Pulsed Mode
Operating Frequency Range of 450 to 1000 kHz
Internal 1.0 MHz Oscillator
Thermal Limit Protection
Built -in Slope Compensation for Current Mode PWM Converter
2.5, 2.85, 3.0, 3.3 Fixed Output Voltages
Shutdown Current Consumption of 0.2 mA
Pb Free Package for Green Manufacturing
Applications
Cellular Phones and Pagers
PDA
Digital Cameras
Supplies for DSP Cores
Portable Applications
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
http://onsemi.com
MARKING
DIAGRAM
9 PIN
MICRO BUMP
FC SUFFIX
CASE 499E
XXXX
YYWW
1
XX = Device Code
YY = Year
WW = Work Week
PIN CONNECTIONS
Pin: A1. - GNDP
A1 B1 C1
A2. - LX
A3. - VCC
B1. - SYNC
A2 B2 C2
B2. - GNDA
B3. - FB
C1. - SHD
A3 B3 C3
C2. - CB1
C3. - CB0
(Bottom View)
ORDERING INFORMATION
Device
Package
Shipping
NCP1512FCT1G 9 Pin Pb Free
Micro Bump
TBD
© Semiconductor Components Industries, LLC, 2003
June, 2003 - Rev. 0
1
Publication Order Number:
NCP1512/D









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NCP1512 Даташит, Описание, Даташиты
Shutdown
Sync
NCP1512
Vout
Cout
10 m
L 6.8 mH
CB0
CB1
Vbat
Cin
10 m
Figure 1. Applications Circuit
Vin
Cin
VCC Q1
LX L
FB
Low Iq
Pulsed
Cntrl
PWM/
PFM
Cntrl
Control
Q2
Sync CB0 CB1 SHD
GNDP
Figure 2. Block Diagram
GNDA
Vout
Cout
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NCP1512 Даташит, Описание, Даташиты
NCP1512
PIN FUNCTION DESCRIPTION
Pin No.
Symbol
Type
A1
GNDP
Power Ground
A2 LX Analog Output
A3
VCC
Analog Input
B1
SYNC
Analog Input
B2
GNDA
Analog Ground
B3 FB Analog Input
C1
SHD
Analog Input
C2 CB1 Analog Input
C3 CB0 Analog Input
Description
Ground Connection for the NFET Power Stage.
Connection from Power Pass Elements to the Inductor.
Power Supply Input for Power and Analog VCC.
Synchronization input for the PWM converter. If a clock signal is present, the
converter uses the rising edge for the turn on. If this pin is low, the converter is in
the Pulsed mode. If this pin is high, the converter uses the internal oscillator for
the PWM mode. This pin contains an internal pull down resistor.
Ground connection for the Analog Section of the IC. This is the GND for the FB,
Ref, Sync, CB, and SHD pins.
Feedback Voltage from the Output of the Power Supply.
Enable for Switching Regulator. This Pin is Active High to enable the NCP1512.
The SHD Pin has an internal pull down resistor to force the converter off if this pin
is not connected to the external circuit.
Selects Vout. This pin contains an internal pull up resistor.
Selects Vout. This pin contains an internal pull down resistor.
MAXIMUM RATINGS (Note 1)
Rating
Maximum Voltage All Pins
Maximum Operating Voltage All Pins
Thermal Resistance, Junction-to-Air
Operating Ambient Temperature Range
ESD Withstand Voltage
Human Body Model (Note 1)
Machine Model (Note 1)
Moisture Sensitivity
Storage Temperature Range
Junction Operating Temperature
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2,000 V per MIL-STD-883, Method 3015.
Machine Model Method 200 V.
Symbol
Vmax
Vmax
Rja
TA
VESD
MSL
Tstg
TJ
Value
5.5
5.2
159
-30 to 85
> 2500
> 100
Level 1
-55 to 150
-30 to 125
Unit
V
V
°C/W
°C
V
°C
°C
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NCP1512PWM Buck ConverterON Semiconductor
ON Semiconductor

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