ISL78220 Datasheet, PDF (7/22 Pages) Intersil Corporation – 6-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement

ISL78220
Absolute Maximum Ratings
Supply Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND-0.3V to +45V
All ISEN_ Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_IN - 5V to V_IN + 0.3V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to V_CC + 0.3V
ESD Rating
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . .2.5kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . 200V
Charge Device Model (Tested per JESD22-C101C). . . . . . . . . . . . . 1.5kV
Latch Up (Tested per JESD78B, Class II, Level A) . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
44 Ld EP-TQFP Package (Notes 4, 5) . . . . . .
28
2.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+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
Operating Conditions
Voltage at VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.6V to +40V
All ISEN_ Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIN - 5V to VIN + 0.3V
Voltage at VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5%
Ambient Temperature (Auto) . . . . . . . . . . . . . . . . . . . . . . .-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 Operating Conditions: V_IN = 12V, T_A = -40°C to +125°C, unless otherwise specified. Typical specifications
are at T_A = +25°C. Boldface limits apply over the operating temperature range, -40°C to +125°C.
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
SUPPLY INPUT
Input Voltage Range
5.6
12
40
V
Input Supply Current (Normal Mode)
Input Supply Current (Shutdown Mode)
INTERNAL LINEAR REGULATOR
V_IN = 12V, R_FS = 158kΩ (For f_S = 250kHz), EN = 5V
V_IN = 12V, R_FS = 158kΩ (For f_S = 250kHz), EN = 0V
8
12 mA
10 µA
LDO Output Voltage (VCC Pin)
LDO Current Limit (VCC pin)
V_IN > 5.6V, C_L = 4.7µF from VCC to GND, I_VCC < 50mA
VCC = 3V, C_L = 4.7µF from VCC to GND
4.75
5
5.25 V
200
mA
(Note 7)
POWER-ON RESET (POR) AND ENABLE
POR Threshold
VCC Rising
4.4
4.5
4.6
V
VCC Falling
4.1
4.2
4.3
V
EN Threshold
Rising
1.1
1.2
1.3
V
Hysteresis
70
mV
OSCILLATOR
Accuracy of Switching Frequency Setting
Adjustment Range of Switching Frequency
R_FS = 158kΩ from FS to GND
225 250 275 kHz
75
1000 kHz
FS pin voltage
1
V
SOFT-START
Soft-Start Current
Soft-Start Pre-Bias Voltage Range
C_SS = 2.2nF from SS to GND
4
5
6
µA
0
2
V
Soft-Start Pre-Bias Voltage Accuracy
Soft-Start Clamp Voltage
V_FB = 500mV
-25
25 mV
3.4
V
REFERENCE VOLTAGE
System Accuracy
-40°C to +125°C, measure at FB pin, V_REF2 > 2.5V
1.98
2
2.02 V
7
FN7688.0
December 15, 2011