ISL6420B Intersil Corporation, ISL6420B Datasheet - Page 7

• Manufacturer Part Number: ISL6420B
• Description: Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
• Manufacturer: Intersil Corporation

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Electrical Specifications
REFERENCE AND SOFT-START/ENABLE
Internal Reference Voltage
Soft-Start Current
Soft-Start Threshold
Enable Low (Converter Disabled)
PWM CONTROLLER GATE DRIVERS
Gate Drive Peak Current
Rise Time
Fall Time
Dead Time Between Drivers
ERROR AMPLIFIER
DC Gain (Note 7)
Gain-Bandwidth Product (Note 7)
Slew Rate (Note 7)
OVERCURRENT PROTECTION
OCSET Current Source
POWER GOOD AND CONTROL FUNCTIONS
Power-Good Lower Threshold
Power-Good Higher Threshold
PGOOD Leakage Current
PGOOD Voltage Low
PGOOD Delay
CDEL Current for PGOOD
CDEL Threshold
EXTERNAL REFERENCE
Min External Reference Input at
GPIO1/REFIN
Max External Reference Input at
GPIO1/REFIN
REFERENCE BUFFER
Buffered Output Voltage - Internal Reference
Buffered Output Voltage - Internal Reference
Buffered Output Voltage - External Reference
Buffered Output Voltage - External Reference
PARAMETER
7
limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested. (Continued)
Operating Conditions: V
V
V
V
V
SYMBOL
I
I
V
REFOUT
REFOUT
REFOUT
REFOUT
OCSET
PGLKG
V
GBW
V
V
SOFT
I
SR
REF
PG+
SS
PG-
IN
Co = 1000pF
Co = 1000pF
V
Fraction of the set point; ~3µs noise filter
Fraction of the set point; ~3µs noise filter
V
I
CDEL = 0.1µF
CDEL threshold = 2.5V
VMSET/MODE = H, C
VMSET/MODE = H, C
I
VMSET/MODE = High,
C
I
VMSET/MODE = High,
C
V
VMSET2/MODE = High,
C
V
VMSET2/MODE = High,
C
= 12V, PV
PGOOD
REFOUT
REFOUT
OCSET
PULLUP
REFIN
REFIN
REFOUT
REFOUT
REFOUT
REFOUT
ISL6420B
= 1.25V, I
= 1.25V, I
= 4mA
= 4.5V
= 1mA,
= 20mA,
TEST CONDITIONS
= 5.0V (Note 8)
CC
= 2.2µF, T
= 2.2µF, T
= 2.2µF
= 2.2µF
shorted with V
REFOUT
REFOUT
A
A
REFOUT
REFOUT
= -40°C to +85°C
= -40°C to +85°C
= 1mA,
= 20mA,
CC5
= 2.2µF
= 2.2µF
, T
A
= +25°C; Parameters with MIN and/or MAX
0.594
0.583
0.575
1.227
1.219
MIN
1.0
-14
80
9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.600
0.595
0.587
1.246
1.238
TYP
100
125
0.7
-10
2.5
10
20
20
20
88
15
6
2
-
-
-
-
-
-
-
0.606
1.250
0.607
0.599
1.265
1.257
MAX
120
1.0
0.5
16
-8
1
-
-
-
-
-
-
-
-
-
-
-
-
-
April 27, 2009
UNITS
FN6901.0
MHz
V/µs
ms
µA
dB
µA
µA
µA
ns
ns
ns
%
%
V
V
V
A
V
V
V
V
V
V
V
V