isl9440b Intersil Corporation, isl9440b Datasheet - Page 6

• Manufacturer Part Number: isl9440b
• Description: Triple Step-down Pwm And Single Linear Controller With Programmable Soft-start
• Manufacturer: Intersil Corporation

Absolute Maximum Ratings
VCC_5V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VCC_5V Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
BOOT/UGATE to PHASE . . . . . . . . . . . . . -0.3V to VCC_5V + 0.3V
PHASE1,2,3 and ISEN1, 2,3, to GND
EN/SS1,EN/SS2, EN/SS3, FB1, FB2, FB3, to GND . . . . . . -0.3V to
VCC_5V + 0.3V
LDOFB, OCSET1, OCSET2, OCSET3,
PGOOD, RST, G4 to GND . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
Electrical Specifications
V
Input Voltage Range
Input Voltage Range
VCC_5V SUPPLY (Note 3)
Operation Voltage
Internal LDO Output Voltage
Maximum Supply Current of Internal LDO
V
Shutdown Current (Note 4)
Operating Current (Note 5)
REFERENCE SECTION
Internal Reference Voltage
Reference Voltage Accuracy
PWM CONTROLLER ERROR AMPLIFIERS
DC Gain (Note 6)
Gain-BW Product (Note 6)
Slew Rate (Note 6)
PWM REGULATOR
Switching Frequency (ISL9440B)
Maximum Duty Cycle (ISL9440B)
Minimum Duty Cycle (ISL9440B)
Switching Frequency (ISL9440C)
1. θ
2. For θ
LGATE1, LGATE2, LGATE3, to GND. . . -0.3V to VCC_5V + 0.3V
IN
IN
. . . . . . . . . . . . . . . . . . . . .-5V (<100ns, 10µJ)/-0.3V (DC) to +28V
Brief TB379.
SUPPLY
SUPPLY CURRENT
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
PARAMETER
6
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V
values are at T
specified. Temperature limits established by characterization and are not production tested.
IN
A
= 5.6V to 24V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7µF, T
= +25°C; Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise
ISL9440B, ISL9440C
V
V
V
EN/SS1 = EN/SS2 = EN/SS3 = 0,
V
floating.
Across specified temperature range
Across specified temperature range
IN
IN
IN
IN
= VCC_5V (Note 7)
> 5.6V, I
= 12V
=12V. PGOOD and RST are
TEST CONDITIONS
Thermal Information
Thermal Resistance (Typical Notes 1, 2)
Maximum Junction Temperature . . . . . . . . . . . . . . .-55°C to +150°C
Maximum Operating Temperature . . . . . . . . . . . . . . .-40°C to +85°C
Maximum Storage Temperature. . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
L
32 Ld QFN Package. . . . . . . . . . . . . . .
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
= 60mA
MIN
260
522
5.6
4.5
4.5
4.5
60
-1
A
= -40°C to +85°C, Typical
TYP
12.0
5.0
5.0
5.0
0.8
2.0
300
600
75
88
15
93
3
3
θ
JA
(°C/W)
34
MAX
24.0
110
340
678
5.6
5.6
5.5
+1
5
January 15, 2009
θ
JC
UNITS
(°C/W)
FN6799.0
3.5
MHz
V/µs
kHz
kHz
mA
mA
µA
dB
%
%
%
V
V
V
V
V