ISL78205 Datasheet, PDF (6/16 Pages) Intersil Corporation – 2.5A Buck Controller with Integrated High-Side MOSFET

ISL78205
Absolute Maximum Ratings
VIN, PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +44V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
Absolute Boot Voltage, V_BOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +50.0V
Upper Driver Supply Voltage, V_BOOT - V_PHASE. . . . . . . . . . . . . . . . . . . +6.0V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000V
Latch Up Rating (Tested per JESD78B; Class II, Level A) . . . . . . . . . 100mA
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
20 Ld HTSSOP Package (Notes 4, 5) . . . . . . .
32
3.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range. . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V
Ambient Temperature Range (Automotive). . . . . . . . . . . . . . .-40°C to +105°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
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.
5. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Refer to “Block Diagram” on page 4 and Typical Application Schematics on page 5. Operating
Conditions Unless Otherwise Noted: V_IN = 12V, or V_CC = 4.5V, T_A = -40°C to +105°C. Typicals are at T_A = +25°C. Boldface limits apply over the
operating temperature range, -40°C to +105°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
V_IN SUPPLY
V_IN Voltage Range
Operating Supply Current
Standby Supply Current
INTERNAL MAIN LINEAR REGULATOR
I_Q
I_{Q_SBY}
V_IN
V_IN connected to VCC
No switching
EN connected to GND, V_IN = 12V
3.05
40
V
3.05
5.5
V
1.2
mA
1.8
3
µA
MAIN LDO V_CC Voltage
MAIN LDO Dropout Voltage
V_CC Current Limit of MAIN LDO
POWER-ON RESET
V_CC
V_IN > 5V
V_{DROPOUT_MAIN} V_IN = 4.2V, I_VCC = 35mA
V_IN = 3V, I_VCC = 25mA
4.2 4.5 4.8
V
0.3 0.5
V
0.25 0.3
V
60
mA
Rising V_CC POR Threshold
Falling V_CC POR Threshold
V_CC POR Hysteresis
ENABLE
V_{PORH_RISE}
V_{PORL_FALL}
V_{PORL_HYS}
2.82 2.9 3.05 V
2.6 2.8
V
0.3
V
Required Enable On Voltage
Required Enable Off voltage
V_ENH
V_ENL
2
V
0.8
V
6
FN7926.0
September 22, 2011