ISL78225 Datasheet, PDF (9/21 Pages) Intersil Corporation – 4-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement

ISL78225
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. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
Max Duty Cycle, DMAX = GND
V_COMP = 3.5V
Max Duty Cycle, DMAX = FLOAT
V_COMP = 3.5V
Max Duty Cycle, DMAX = VCC
V_COMP = 3.5V
DMAX Source/Sink Current
During t₃ on Figure 14
DMAX Source/Sink Current
After t₃ on Figure 14
PWM_TRI, PWM_INV, SYNC PIN DIGITAL LOGIC
91.7
%
75
%
83.3
%
50
µA
-1
1
µA
Input Leakage Current
EN < 1V
-1
1
µA
Input Pull-Down Current
EN > 2V, Pin Voltage = 2.1V
0.4
1.5
µA
Logic Input Low
0.8
V
Logic Input High
2
V
DRIVE_EN, CLK_OUT PIN
Output High Voltage
Output Low Voltage
VOUT SENSE PIN
I_{DRIVE_EN} = 500µA
I_{DRIVE_EN} = -500µA
4.5
V
0.5
V
Input Leakage Current
-1
1
µA
Threshold Voltage
2.325 2.4 2.475
V
VIN SENSE PIN
Input Leakage Current
-1
1
µA
Threshold Voltage
2.325 2.4 2.475
V
Hysteresis
110
mV
VOUT_OVB, VIN_OVB PIN
Leakage Current
Low Voltage
POWER GOOD MONITOR PIN
V_PIN = HIGH
I_PIN = 0.5mA
1
µA
0.2
V
PGOOD Leakage Current
PGOOD = HIGH
1
µA
PGOOD Low Voltage
Overvoltage Rising Trip Point
Overvoltage Rising Hysteresis
Undervoltage Rising Trip Point
Undervoltage Rising Hysteresis
OVER-TEMPERATURE PROTECTION
I_PGOOD = 0.5mA
V_FB/V_REF, V_REF2 > 2.5V
V_FB/V_REF, V_REF2 > 2.5V
V_FB/V_REF, V_REF2 > 2.5V
V_FB/V_REF, V_REF2 > 2.5V
0.2
V
117
120 123
%
5
%
77
80
83
%
5
%
Over-Temperature Trip Point
160
°C
Over-Temperature Recovery Threshold
145
°C
NOTES:
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise noted. Compliance to datasheet limits is assured by one or
more methods: production test, characterization and/or design.
7. Please refer to LDO current derating curve in “Internal 5V LDO Output Current Limit Derating Curves” on page 19 for I_MAX vs V_IN.
8. Ts = Switching Period = 1/(switching frequency).
9
FN7909.0
December 15, 2011