参数资料
型号: ISL8502AEVAL1Z
厂商: Intersil
文件页数: 6/20页
文件大小: 0K
描述: EVAL BOARD FOR ISL8502
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 2,非隔离
输出电压: 4.4V
电流 - 输出: 2A
输入电压: 5V,5.5 ~ 14 V
稳压器拓扑结构: 降压
频率 - 开关: 500kHz ~ 1.2MHz
板类型: 完全填充
已供物品: 板,文档
已用 IC / 零件: ISL8502
ISL8502A
Absolute Maximum Ratings
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +16.5V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
Absolute Boot Voltage, V BOOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +22.0V
Upper Driver Supply Voltage, V BOOT - V PHASE . . . . . . . . . . . . . . . . . . . +6.0V
All other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
Thermal Information
Thermal Resistance θ JA (°C/W) θ JC (°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
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
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”and “Typical Application Schematics”. Operating conditions unless otherwise noted:
V IN = 12V, or V CC = 5V ±10%, T A = -40°C to +85°C. Typical are at T A = +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 6)
TYP
(Note 6)
UNITS
V IN SUPPLY
Input Voltage Range
V IN
V IN tied to V CC
5.5
(Note 7)
4.5
14
(Note 8)
5.5
V
V
Input Operating Supply Current
I Q
V FB = 1.0V
7
mA
Input Standby Supply Current
IQ_SBY
EN tied to GND, V IN = 14V
1.25
2
mA
SERIES REGULATOR
VCC Voltage
Maximum Output Current
V PVCC
I PVCC
V IN > 5.6V
V IN = 12V
4.5
50
5.0
5.5
V
mA
VCC Current Limit
V IN = 12V, VCC shorted to PGND
300
mA
POWER-ON RESET
Rising VCC POR Threshold
Falling VCC POR Threshold
4.2
3.85
4.4
4.0
4.49
4.10
V
V
ENABLE
Rising Enable Threshold Voltage
Falling Enable Threshold Voltage
Enable Sinking Current
V EN_Rising
V EN_Fall
I EN
2.7
2.3
500
V
V
μA
OSCILLATOR
PWM Frequency
f OSC
R T = 96k Ω
R T = 40k Ω
400
960
500
1200
600
1440
kHz
kHz
FS pin tied to VCC
800
kHz
Ramp Amplitude
Ramp Amplitude
Modulator Gain
Maximum Duty Cycle
Maximum Duty Cycle
Δ V OSC
Δ V OSC
V VIN / Δ V OSC
D MAX
D MAX
V IN = 14V
V IN = 5V
By Design
f OSC = 500kHz
f OSC = 1.2MHz
88
76
1.0
0.470
8
V
V
-
%
%
REFERENCE VOLTAGE
Reference Voltage
6
V REF
0.600
V
FN7940.0
October 21, 2011
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