8502AIRZ Просмотр технического описания (PDF) - Intersil
Номер в каталоге
Компоненты Описание
производитель
8502AIRZ Datasheet PDF : 20 Pages
| |||
ISL8502A
Absolute Maximum Ratings
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +16.5V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
Absolute Boot Voltage, VBOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +22.0V
Upper Driver Supply Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . +6.0V
All other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
Recommended Operating Conditions
Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 14V
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . -40°C to +125°C
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 4, 5) . . . . . . . . . . . . .
38
2
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
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. θJA 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 θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Refer to “Block Diagram”and “Typical Application Schematics”. Operating conditions unless otherwise noted:
VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical are at TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
VIN SUPPLY
Input Voltage Range
VIN
5.5
14
V
(Note 7)
(Note 8)
Input Operating Supply Current
Input Standby Supply Current
SERIES REGULATOR
IQ
IQ_SBY
VIN tied to VCC
VFB = 1.0V
EN tied to GND, VIN = 14V
4.5
5.5
V
7
mA
1.25
2
mA
VCC Voltage
Maximum Output Current
VCC Current Limit
POWER-ON RESET
VPVCC
IPVCC
VIN > 5.6V
VIN = 12V
VIN = 12V, VCC shorted to PGND
4.5
5.0
5.5
V
50
mA
300
mA
Rising VCC POR Threshold
4.2
4.4 4.49
V
Falling VCC POR Threshold
3.85 4.0 4.10
V
ENABLE
Rising Enable Threshold Voltage
Falling Enable Threshold Voltage
Enable Sinking Current
OSCILLATOR
VEN_Rising
VEN_Fall
IEN
2.7
V
2.3
V
500
µA
PWM Frequency
fOSC
RT = 96kΩ
RT = 40kΩ
FS pin tied to VCC
400 500 600 kHz
960 1200 1440 kHz
800
kHz
Ramp Amplitude
Ramp Amplitude
Modulator Gain
Maximum Duty Cycle
Maximum Duty Cycle
REFERENCE VOLTAGE
ΔVOSC
ΔVOSC
VVIN/ΔVOSC
DMAX
DMAX
VIN = 14V
VIN = 5V
By Design
fOSC = 500kHz
fOSC = 1.2MHz
1.0
V
0.470
V
8
-
88
%
76
%
Reference Voltage
VREF
0.600
V
6
FN7940.0
October 21, 2011
Share Link: 