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7443320150 Datasheet(PDF) 4 Page - Microchip Technology

No. de pieza 7443320150
Descripción Electrónicos  High-Speed Synchronous Buck Controller
Download  44 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

7443320150 Datasheet(HTML) 4 Page - Microchip Technology

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MCP19035
DS22326A-page 4
 2012 Microchip Technology Inc.
Error Amplifier
Gain Bandwidth Product
GBP
6.5
10
MHz
Note 1
Open Loop Gain
AOL
70
80
dB
Note 1
Input Offset Voltage
VOS
-5
0.1
5
mV
Note 1
Input Bias Current
(FB Pin)
IBIAS
——
5
nA
Note 1
Error Amplifier
Sink Current
ISINK
—5—
mA
Note 1
Error Amplifier
Source Current
ISOURCE
—5—
mA
Note 1
PWM Section
Maximum Duty Cycle
DCMAX
85
%
Note 1
Minimum ON time
tON(MIN)
130
240
ns
6V
 VIN < 30V, Note 1
Soft Start
Soft Start Time
tSS
—2.6
ms
Shutdown
Logic Low-to-High
Threshold
SHDNHI
0.75
V
4.5V
 VIN < 30V
Logic High-to-Low
Threshold
SHDNLO
0.4
V
4.5V
 VIN < 30V
Power Good
Power Good
Threshold High
PGTH-H
—92
96
% of VREF
Power Good
Threshold Low
PGTH-LOW
88
90
% of VREF
Power Good
Threshold Hysteresis
PGTH-HYS
—2—
% of VREF
Power Good Delay
tPG-DELAY
150
us
VFB = (PGTH-HI + 100 mV) to
(PGTH-LOW – 100 mV)
Power Good Active
Time-Out Period
tPG-TIME-OUT
120
ms
VFB = (PGTH-HI – 100 mV) to
(PGTH-HI + 100 mV)
MOSFET Drivers
High-Side Driver Pull-up
Resistance
RHI-SOURCE
—2
3.5
VBOOT –VPHASE = 4.5V,
IHDRV = 100 mA, Note 1
High-Side Driver Pull-
Down Resistance
RHI-SINK
—2
3.5
VBOOT –VPHASE = 4.5V,
IHDRV = 100 mA, Note 1
Low-Side Driver Pull-Up
Resistance
RLO-SOURCE
—2
3.5
VCC = 5V, Note 1
Low-Side Driver Pull-
Down Resistance
RLO-SINK
—1
2.5
VCC = 5V, Note 1
HDRV Rise Time
tRH
—15
35
ns
CLOAD = 1.0 nF, Note 1
HDRV Fall Time
tFH
—15
35
ns
CLOAD = 1.0 nF, Note 1
LDRV Rise Time
tRL
—10
25
ns
CLOAD = 1.0 nF, Note 1
DC ELECTRICAL CHARACTERISTICS (CONTINUED)
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
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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