isl9444 Intersil Corporation, isl9444 Datasheet - Page 11

• Manufacturer Part Number: isl9444
• Manufacturer: Intersil Corporation

Electrical Specifications
Application Schematics on pages 6 and 7. V
T
NOTES:
10. Check Note 6 for VCC_5V and VIN configurations.
11. Threshold voltage at PHASE1, PHASE2 and PHASE3 pins for turning off the bottom MOSFET during DEM.
SWITCHING FREQUENCY
F
V
CLOCK OUTPUT AND SYNCHRONIZATION
V
V
F
F
LIGHT LOAD EFFICIENCY MODE
V
V
V
PWM GATE DRIVER
I
I
R
R
R
R
t
t
OVERVOLTAGE PROTECTION
V
OVERCURRENT PROTECTION
I
V
OVER-TEMPERATURE
T
T
A
GSRC
GSNK
OCSET
GR
GF
6. In normal operation, where the device is supplied with voltage on the VIN pin, the VCC_5V pin provides a 5V output capable of 75mA (min). When the
7. This is the total shutdown current with V
8. Operating current is the supply current consumed when the device is active but not switching. It does not include gate drive current.
9. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
SW
CLK
SYNC
OT-TH
OT-HYS
RT
CLKH
CLKL
MODETHH
MODETHL
CROSS
OVTH
OCSET
UG_UP
UG_DN
LG_UP
LG_DN
SYMBOL
= +25°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
VCC_5V pin is connected to external 5V supply, the internal LDO regulator is disabled. The voltage at VCC_5V should not exceed the voltage at VIN at
any time. (Refer to the“Pin Descriptions” on page 2 for more details.)
and are not production tested.
Switching Frequency
Switching Frequency
Switching Frequency
RT Voltage
CLKOUT Output High
CLKOUT Output Low
CLKOUT Frequency
SYNC Synchronization Range
MODE/SYNC Threshold High
MODE/SYNC Threshold Low
Diode Emulaton Phase Threshold (Note 11)
Source Current
Sink Current
Upper Drive Pull-Up
Upper Drive Pull-Down
Lower Drive Pull-Up
Lower Drive Pull-Down
Rise Time
Fall Time
OV Trip Point
Overcurrent Threshold (OCSET_) (Note 10)
Full Scale Input Current (ISEN_) (Note 10)
Overcurrent Set Voltage (OCSET_)
Over-Temperature Shutdown
Over-Temperature Hysteresis
(Note 9)
(Note 9)
(Note 9)
11
PARAMETER
Recommended operating conditions unless otherwise noted. Refer to Block Diagram on page 5 and Typical
IN
IN
= 5.0V to 28V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7µF, T
= 5.6V and 26V.
ISL9444
R
R
R
R
ISOURCE = 1mA
ISINK = 1mA
R
R
V
VCC_5V = 5.0V
VCC_5V = 5.0V
VCC_5V = 5.0V
VCC_5V = 5.0V
C
C
ROCSET = 55kΩ
IN
OUT
OUT
T
T
T
T
T
T
= 20.5kΩ
= 169kΩ
= 49.9kΩ
= 49.9kΩ
= VCC_5V
= 49.9kΩ
= 12V
= 1000pF
= 1000pF
TEST CONDITIONS
A
= -40°C to +85°C, Typical values are at
VCC_5V - 0.3
(Note 9)
114.5
1080
1080
1020
1.67
MIN
168
540
485
1.3
1.1
(Continued)
118.5
1200
2000
1200
1.74
198
600
500
800
150
TYP
1.6
1.4
1.5
1.1
1.5
0.6
10
32
15
15
-3
8
(Note 9) UNITS
123.5
1320
1320
1380
MAX
1.81
228
660
515
0.3
1.9
1.7
2.5
1.5
3
3
May 23, 2011
FN7665.0
kHz
kHz
kHz
kHz
kHz
mA
mA
mV
mV
µA
µA
°C
°C
ns
ns
%
Ω
Ω
Ω
Ω
V
V
V
V
V