ISL6442 Datasheet, PDF (4/16 Pages) Intersil Corporation – Dual (180° Out-of-Phase) PWM and Linear Controller

ISL6442
Absolute Maximum Ratings (Note 1)
SS1/EN1, SS2/EN2, COMP1, COMP2 to SGND . . . -0.3V to +6.0V
VCC, FB1, FB2, RT, PGOOD to SGND . . . . . . . . . . . -0.3V to +6.0V
LCDR, LCFB to SGND. . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V
VIN, OCSET1, and OCSET2 to PGND . . . . . . . . . . . . -0.3V to +28V
BOOT1 and BOOT2 to PGND . . . . . . . . . . . . . . . . . . . -0.3V to +33V
BOOT1 to PHASE1, and BOOT2 to PHASE2 . . . . . . -0.3V to +6.0V
UGATE1 to PHASE1 . . . . . . . . . . . . . . . . . -0.3V to (BOOT1 +0.3V)
UGATE2 to PHASE2 . . . . . . . . . . . . . . . . . -0.3V to (BOOT2 +0.3V)
LGATE1, LGATE2 to PGND . . . . . . . . . . . . . . -0.3V to (VCC+0.3V)
PHASE1, PHASE2 to PGND . . . . . . . . . . . . . . . . . . . . . . -1V to 28V
SGND to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V
Thermal Information
Thermal Resistance (Typical, Note 2)
θ_JA (°C/W)
QSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
85
Maximum Junction Temperature (Plastic Package).-55°C to +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10%
VIN Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 24V
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:
1. All voltages are measured with respect to GND.
2. θ_JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Operating Conditions Unless Otherwise Noted: VIN = 12V, or V_CC = 5V ±10%, T_A = -40°C to +85°C. Typical
values are at +25°C. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise
specified. Temperature limits established by characterization and are not production tested.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VIN SUPPLY
Input Operating Supply Current I_{CC_op}
VIN = 5.5V or 12V; LGATE_x, UGATE_x Open,
FB forced above regulation point (no
switching)
4.5
7.5
mA
VIN = 24V
50
70
mA
Input Standby Supply Current
I_{CC_sb}
VIN = 5.5V, 12V, 24V;
SS1/EN1 = SS2/EN2 = 0V
1.25
2
mA
VCC INTERNAL REGULATOR
Output Voltage
V_VCC
Maximum Output Current
I_{ICC_max}
VCC Current Limit (Note 3)
I_{ICC_CL}
REFERENCE AND SOFT-START
VIN > 5.5V
VIN = 12V
VCC is pulled to PGND; (Note 4)
4.5
5.2
5.5
V
80
mA
300
mA
Reference Voltage at FB1, FB2
V_REF1,
V_REF2
VIN = 5V or 12V; T_A = +25°C
VIN = 5V or 12V; T_A = 0°C to +85°C
0.6000
V
0.5925
0.6085
V
VIN = 5V or 12V; T_A = -40°C to +85°C
0.5900
0.6085
V
Reference Voltage at FB1, FB2
V_REF1,
V_REF2
VIN = 24V; T_A = +25°C
VIN = 24V; T_A = 0°C to +85°C
0.6015
V
0.5940
0.6100
V
VIN = 24V; T_A = -40°C to +85°C
0.5915
0.6100
V
EN_x/SS_x Soft-Start Current
I_SSx
20
30
40
µA
EN_x/SS_x Enable Threshold
V_ENx
0.8
1.0
1.2
V
EN_x/SS_xEnable Threshold
Hysteresis
V_{ENx_hys} (Note 3)
50
mV
EN_x/SS_x Soft-Start Top of Ramp V_{SSx_top} (Note 3)
Voltage
3.2
V
POWER-ON RESET ON VCC
Rising Threshold
Falling Threshold
V_{POR_r}
V_{POR_f}
4.2
4.4
4.475
V
3.85
4.0
4.1
V
4
FN9204.2
October 31, 2008