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7443320150 数据表(PDF) 3 Page - Microchip Technology

部件名 7443320150
功能描述  High-Speed Synchronous Buck Controller
Download  44 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

7443320150 数据表(HTML) 3 Page - Microchip Technology

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 2012 Microchip Technology Inc.
DS22326A-page 3
MCP19035
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VIN - VGND........................................................ -0.3V to +30V
VBOOT................................................................ -0.3V to +36V
VHDRV, HDRV Pin................. +VPHASE -0.3V to VBOOT+0.3V
VLDRV, LDRV Pin.....................+ (VGND-0.3V) to (VCC+0.3V)
Max. Voltage on Any Pin ...........+ (VGND-0.3V) to (VCC+0.3V)
Storage Temperature ....................................-65°C to +150°C
Maximum Junction Temperature................................. +150°C
ESD protection on all pins (HBM) .................................... 1 kV
ESD protection on all pins (MM) .....................................200V
† Notice:
Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated
in
the
operational
sections
of
this
specification is not intended. Exposure to maximum
rating conditions for extended periods may affect
device reliability.
DC ELECTRICAL CHARACTERISTICS
Electrical Specifications
: Unless otherwise noted, VIN = 12V, FSW = 300 kHz, CIN = 1.0 µF, TA = +25°C (for typical
values), TA = -40°C to +125°C (for minimum and maximum).
Parameters
Symbol
Min
Typ
Max
Units
Conditions
Inputs
Input Voltage Range
VIN
4.5
30
V
UVLO (VIN Rising)
UVLOON
44.2
4.4
V
UVLO (VIN Falling)
UVLOOFF
3.4
3.6
3.8
V
UVLO Hysteresis
UVLOHYST
600
mV
Input Quiescent Current
I(VIN)—
6
8
mA
Shutdown Current
IIN_SHDN
25
50
µA
SHDN = GND.
Internal Voltage Regulator is
also disabled
Linear Regulator
Output Voltage
VCC
4.875
5
5.125
V
6V
 VIN < 30V
Output Current
IVCC-OUT
50
mA
6.5V
 VIN < 30V, Note 2
Short-Circuit
Output Current
IVCC-OUT_SC
100
mA
VIN = 6V, RLOAD < 0.1
Load Regulation
0.1
%
Note 1
Line Regulation
0.05
%
Note 1
Dropout Voltage
0.75
1.3
V
IVCC_OUT = 50 mA
Power Supply
Rejection Ratio
PSRR
70
dB
f
 1000 Hz,
IVCC_OUT = 50 mA
CIN = 0 µF,
CVCC-OUT = 4.7 µF, Note 1
Internal Oscillator
Switching
Frequency
FSW
255
300
345
kHz
See Section 4.4, Internal
Oscillator
Ramp Signal Amplitude
VRAMP
0.911.1
VPP
Note 1
Reference Voltage
Reference Voltage
Generator
VREF
585
600
615
mV
Note 1:
Ensured by design. Not production tested.
2:
Limited by the maximum power dissipation of the case.
3:
Possibility to be adjusted for high volumes.


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