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參數(shù)資料
| 型號(hào)： | ISL8500 |
| 廠商： | Intersil Corporation |
| 英文描述： | Switching Regulator Control (Voltage Mode type AC/DC) ; Vin (V) max.: 10 to 35; Icc (mA) max.: 15; Fmax (kHz) max.: 500; Topr [Tjopr] (°C): -30 to +85; Remarks: Primary control MOSFET drive; Package: SOP; Pin count: 20 |
| 中文描述： | 甲標(biāo)準(zhǔn)降壓PWM穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 622K |
| 代理商： | ISL8500 |
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4
FN6611.0
December 10, 2007
Absolute Maximum Ratings
(Note 1)
Thermal Information
VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 26V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 33V
BOOT to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.03V to 6V
VDD, FB, EN, COMP, PG, SS . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
Recommended Operating Conditions
VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 4.5V to 25V
Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 2A
Ambient Temperature Range. . . . . . . . . . . . . . . . . . . . -40°C to +85°
Thermal Resistance
QFN Package (Notes 1, 2). . . . . . . . . .
Ambient Temperature Range. . . . . . . . . . . . . . . . . . .-40°C to +85°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
θ
JA
(°C/W)
39
θ
JC
(°C/W)
3
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.
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 for details.
2. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379 for details.
3. Test Condition: V
IN
= 15V, FB forced above regulation point (0.6V), no switching, and power MOSFET gate charging current not included.
4. Excluding the blanking time.
5. Specifications at -40°C to +85°C are established by +25°C test with margin limits.
Electrical Specifications
Unless Otherwise Noted, All Parameter Limits are Established Over the Recommended Operating Conditions
and the Typical Specifications are Measured at the Following Conditions: T
A
= -40°C To +85°C (Note 5),
V
IN
= 5.5V
to 25V, Unless Otherwise Noted. Typical Values are at T
A
= +25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY VOLTAGE
VIN Voltage Range
VIN
5.5
-
25
V
VIN connected to VDD
4.5
5.0
5.5
V
VIN Operating Supply Current
I
OP
Note 3
-
2
2.5
mA
VIN Shutdown Supply Current
I
SD
V
IN
= 15V, EN = GND
-
80
100
μA
POWER-ON RESET
VDD POR Threshold
Rising Edge
4.00
4.15
4.30
V
Hysteresis
-
275
-
mV
INTERNAL VDD LDO
VDD Output Voltage Range
V
IN
= 5.5V to 25V, I
VDD
= 0mA to 30mA
4.5
5.00
5.5
V
REFERENCE
Reference Voltage
V
FB
V
IN
= 5.5V to 25V, I
REF
= 0
0.594
0.6
0.606
V
STANDARD BUCK PWM REGULATOR
FB Line Regulation
I
OUT
= 0mA, V
IN
= 5.5V to 25V
-0.05
-
0.05
%
FB Leakage Current
V
FB
= 0.6V
-50
0
50
nA
OSCILLATOR AND PWM MODULATOR
Nominal Switching Frequency
f
SW
450
500
550
kHz
Modulator Gain
A
MOD
V
IN
= 12V (A
MOD
= 8/V
IN
)
0.65
0.75
0.95
V/V
Peak-to-Peak Sawtooth Amplitude
V
RAMP
V
IN
= 12V (V
P-P
= V
IN
/8)
-
1.3
-
V
PWM Ramp Offset Voltage
V
OFFSET
0.75
0.8
0.85
V
Maximum Duty Cycle
DCmax
COMP > 4V
80
-
-
%
ISL8500
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