ISL6443A Datasheet, PDF (6/19 Pages) Intersil Corporation – 300kHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller

ISL6443A
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Block Diagram” on page 3 and “Typical
Application Schematic” on page 4. V_IN = 5.6V to 24V, or VCC_5V = 5V ±10%, T_A = -40°C to +85°C (Note 6),
Typical values are at T_A = +25°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SYNC Input Minimum Pulse Width (Note 6)
-
15.0
-
ns
SYNC Output HIGH Level
SHUTDOWN1/SHUTDOWN2
V_CC - 0.6V
-
-
V
HIGH Level (Converter Enabled)
Internal Pull-up (3μA)
2.0
-
-
V
LOW Level (Converter Disabled)
-
-
0.8
V
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 6)
-
88
-
dB
Gain-Bandwidth Product (Note 6)
-
15
-
MHz
Slew Rate (Note 6)
-
2.0
-
V/μs
PWM CONTROLLER GATE DRIVERS (Note 6)
Sink/Source Current
-
400
-
mA
Upper Drive Pull-Up Resistance
VCC_5V = 4.5V
-
8
-
Ω
Upper Drive Pull-Down Resistance
VCC_5V = 4.5V
-
3.2
-
Ω
Lower Drive Pull-Up Resistance
VCC_5V = 4.5V
-
8
-
Ω
Lower Drive Pull-Down Resistance
VCC_5V = 4.5V
-
1.8
-
Ω
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
-
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 7)
-
32
-
μA
Overcurrent Threshold (Note 7)
ROCSET = 110kΩ
-
64
-
μA
OCSET (Current Limit) Voltage
-
1.7
-
V
6
FN6600.1
December 7, 2007