ISL78208 Datasheet, PDF (7/25 Pages) Intersil Corporation – Wide VIN Dual Standard Buck Regulator with 3A/3A Continuous Output Current

ISL78208
Absolute Maximum Ratings
VIN1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +30V
PHASE1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +30V
BOOT1/2 to PHASE1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
FS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
SYNCIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
FB1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +2.95V
EN1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
PGOOD1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
COMP1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
VCC to GND Short Maximum Duration. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1s
SYNCOUT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
SS1/2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +5.9V
ESD Rating
Human Body Model (Tested per JESD22-A114) . . . . . . . . . . . . . . . . . 4kV
Charged Device Model (Tested per JESD22-C101E). . . . . . . . . . . . .2.2kV
Machine Model (Tested per JESD22-A115). . . . . . . . . . . . . . . . . . . . 300V
Latch Up (Tested per JESD-78A; Class 2, Level A) . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
WFQFN Package (Notes 4, 5) . . . . . . . . . . .
30
1.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-55°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 28V
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:
4. θ_JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379 for details.
5. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications T_A = -40°C to +105°C, V_IN = 4.5V to 28V, unless otherwise noted. Typical values are at T_A = +25°C.
Boldface limits apply over the operating temperature range, -40°C to +105°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 8)
MAX
TYP
(Note 8) UNITS
SUPPLY VOLTAGE
V_IN Voltage Range
V_IN Quiescent Supply Current
V_IN Shutdown Supply Current
V_CC Voltage
POWER-ON RESET
V_IN
I_Q
I_SD
EN1/2 = 0V
V_CC V_IN = 12V; I_OUT = 0mA
4.5
28
V
1.2
2.2
mA
20
45
µA
4.5
5.1
5.6
V
V_IN POR Threshold
Rising Edge
Falling Edge
3.9
4.4
V
3.2
3.7
V
OSCILLATOR
Nominal Switching Frequency
F_SW FS = VCC
Resistor from FS to GND = 383kΩ
420
500
580
kHz
300
kHz
Resistor from FS to GND = 40.2kΩ
2000
kHz
FS Voltage
Switching Frequency
V_FS FS = 100kΩ
SYNCIN = 600kHz
780
800
820
mV
300
kHz
1.2MHz ≤ SYNCIN ≤ 4MHz, +25°C
600
2000
kHz
1.2MHz ≤ SYNCIN ≤ 4MHz, -40°C to +105°C 600
1500
Minimum Off-Time
t_OFF
ERROR AMPLIFIER
130
ns
Error Amplifier Transconductance Gain
gm
125
205
285
µA/V
FB1, FB2 Leakage Current
VFB = 0.8V
10
100
nA
Current Sense Amplifier Gain
R_T
Reference Voltage
0.18
0.792
0.21
0.24
V/A
0.8
0.808
V
7
FN8354.0
July 12, 2013