ISL6443 Datasheet, PDF (6/18 Pages) Intersil Corporation – 300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6443
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V_IN = 5.6V to 24V, or VCC_5V = 5V ±10%, T_A = -40°C to 85°C (Note 2),
Typical values are at T_A = 25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONVERTERS
Output Voltage
-
0.8
-
V
FB Pin Bias Current
-
-
150
nA
Maximum Duty Cycle
Minimum Duty Cycle
C_OUT = 1000pF, T_A = 25°C
93
-
-
%
-
4
-
%
PWM CONTROLLER ERROR AMPLIFIERS
DC Gain (Note 7)
80
88
-
dB
Gain-Bandwidth Product (Note 7)
5.9
-
-
MHz
Slew Rate (Note 7)
-
2.0
-
V/µs
Maximum Output Voltage (Note 7)
0.9
-
-
V
Minimum Output Voltage (Note 7)
-
-
3.6
V
PWM CONTROLLER GATE DRIVERS (Note 8)
Sink/Source Current
-
400
-
mA
Upper Drive Pull-Up Resistance
VCC_5V = 4.5V
-
8
-
Upper Drive Pull-Down Resistance
VCC_5V = 4.5V
-
3.2
-
Lower Drive Pull-Up Resistance
VCC_5V = 4.5V
-
8
-
Lower Drive Pull-Down Resistance
VCC_5V = 4.5V
-
1.8
-
Rise Time
Fall Time
LINEAR CONTROLLER
C_OUT = 1000pF
C_OUT = 1000pF
-
18
-
ns
-
18
-
ns
Drive Sink Current
50
-
-
mA
FB3 Feedback Threshold
I = 21mA
-
0.8
-
V
Undervoltage Threshold
V_FB
FB3 Input Leakage Current (Note 7)
-
75
-
%
-
45-
150
nA
Amplifier Transconductance
POWER GOOD AND CONTROL FUNCTIONS
V_FB = 0.8V, I = 21mA
-
2
-
A/V
PGOOD LOW Level Voltage
Pull-up = 100kΩ
-
0.1
0.5
V
PGOOD Leakage Current
-
-
±1.0
µA
PGOOD Upper Threshold, PWM 1 and 2
Fraction of set point
105
-
120
%
PGOOD Lower Threshold, PWM 1 and 2
Fraction of set point
80
-
95
%
PGOOD for Linear Controller
70
75
80
%
ISEN and CURRENT LIMIT
Full Scale Input Current (Note 9)
-
32
-
µA
Overcurrent Threshold (Note 9)
ROCSET = 110kΩ
-
64
-
µA
OCSET (Current Limit) Voltage
-
1.75
-
V
SOFT-START
Soft-Start Current
-
5
-
µA
6
FN9044.1
October 4, 2005