isl9444 Intersil Corporation, isl9444 Datasheet - Page 10

• Manufacturer Part Number: isl9444
• Manufacturer: Intersil Corporation

Electrical Specifications
Application Schematics on pages 6 and 7. V
T
SOFT-START CURRENT
I
DEFAULT INTERNAL MINIMUM SOFT-STARTING
t
POWER-FAIL MONITOR
V
V
V
V
POWER-GOOD MONITORS
V
V
V
I
PGOOD1, PGOOD2 TIMING
t
t
PGOOD3 TIMING
REFERENCE SECTION
V
I
PWM CONTROLLER ERROR AMPLIFIERS
GBW
SR
PWM REGULATOR
t
DV
A
SS
PGLKG
FBLKG
SS_MIN
PGR
PGF
OFF_MIN
PFI_REF
PFI_FAL
PFO_L
PFO_H
PGOV
PGUV
PGLOW
REF
SYMBOL
= +25°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
RAMP
EN/SS1, TK/SSx Soft-Start Charge Current
Default Internal Output Ramping Time
PFI Input Threshold Voltage, Rising
PFI Input Threshold Voltage, Falling
PFO Output Voltage Low
PFO Output Voltage High
PGOODx Upper Threshold, PWM 1, 2 and 3
PGOODx Lower Threshold, PWM 1, 2 and 3
PGOODx Low Level Voltage
PGOODx Leakage Current
PGOOD Rise Time
PGOOD Fall Time
VOUT Rising Threshold to PGOOD Rising
VOUT Falling Threshold to PGOOD Falling
EN2, EN3 Falling Threshold to PGOOD Falling
PG3_DLY Charge Current
PG3_DLY Threshold Voltage (Note 9)
Internal Reference Voltage
Reference Voltage Accuracy
FB Bias Current (Note 9)
DC Gain (Note 9)
Gain-BW Product (Note 9)
Slew Rate (Note 9)
Minimum Off Time
Peak-to-Peak Saw-tooth Amplitude (Note 9)
Ramp Offset
10
PARAMETER
Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 5 and Typical
IN
= 5.0V to 28V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7µF, T
ISL9444
VEN/SS1 = VTK/SSx = 0V
I_SINK = 1mA
I_SOURCE = 1mA
I_SINK = 2mA
PGOODx = 5V
RPULLUP = 10k to 3.3V
RPULLUP = 10k to 3.3V
V
T
T
RFS = 169kΩ
V
V
A
A
PG3_DLY
IN
IN
= 0°C to +85°C
= -40°C to +85°C
= 12V
= 5.0V
= 1.2V
TEST CONDITIONS
A
= -40°C to +85°C, Typical values are at
VCC_5V -0.3
(Note 9)
105.5
-1.15
1.05
1.16
1.05
1.16
MIN
-1.0
1.3
0.7
1.2
85
40
95
(Continued)
1.195
0.700
1.55
1.22
1.12
0.05
0.05
0.55
111
125
TYP
2.1
1.1
1.2
1.9
2.0
1.2
89
75
88
15
1
1
(Note 9) UNITS
115.5
MAX
2.05
1.28
1.19
1.23
+1.0
+1.0
150
110
100
155
2.9
0.3
0.3
1.5
1.7
2.6
94
May 23, 2011
FN7665.0
V/µs
MHz
ms
ms
µA
µA
nA
µs
µs
µs
µs
nA
dB
ns
%
%
%
%
V
V
V
V
V
V
V
V
V
V