參數(shù)資料
型號(hào)： MIC4690BM
廠商： MICREL INC
元件分類： 穩(wěn)壓器
英文描述： 150000 SYSTEM GATE 2.5 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN
中文描述： SWITCHING REGULATOR, 550 kHz SWITCHING FREQ-MAX, PDSO8
封裝： SOP-8
文件頁(yè)數(shù)： 3/12頁(yè)
文件大?。?/td> 225K
代理商： MIC4690BM
June 2001
3
MIC4690
MIC4690
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
IN
),
Note 3 ......................................
+34V
Shutdown Voltage (V
SHDN
) .............................
–
0.3V to V
IN
Steady-State Output Switch Voltage (V
SW
) .......
–
1V to V
IN
Feedback Voltage (V
FB
)..............................................+12V
Storage Temperature (T
S
) .......................
–
65
°
C to +150
°
C
ESD Rating ..............................................................
Note 4
Micrel
Electrical Characteristics
V
IN
= 12V, V
OUT
= 5V; I
LOAD
= 500mA; V
SHDN
= 0V, T
J
= 25
°
C, unless otherwise noted.
Bold
values indicate
–
40
°
C
≤
T
J
≤
+125
°
C.
Parameter
Condition
Min
Typ
Max
Units
Feedback Voltage
(
±
1%)
(
±
2%)
1.217
1.205
1.230
1.243
1.255
V
V
8V
≤
V
IN
≤
30V, 0.1A
≤
I
LOAD
≤
1A, V
OUT
= 5V
1.193
1.180
1.230
1.267
1.280
V
V
Maximum Duty Cycle
V
FB
= 1.0V
V
FB
= 1.5V
V
SHDN
= 5V (regulator off)
V
SHDN
= 12V (regulator off)
V
FB
= 0V
90
93
%
Quiescent Current
7
12
mA
Standby Quiescent Current
30
100
μ
A
1.5
μ
A
Frequency Foldback
220
300
KHz
Oscillator Frequency
450
500
550
kHz
Saturation Voltage
I
OUT
= 1A
V
IN
= 30V, V
SHDN
= 5V, V
SW
= 0V
V
IN
= 30V, V
SHDN
= 5V, V
SW
=
–
1V
V
FB
= 0V, V
OUT
= 0V, See Test Circuit
regulator off
1.2
V
Output Leakage Current
50
500
μ
A
4
20
mA
Short Circuit Current Limit
1.3
2.5
3.0
A
Shutdown Pin Input Logic Level
2
1.5
V
regulator on
1.25
0.8
V
Shutdown Pin Input Current
V
SHDN
= 5V (regulator off)
V
SHDN
= 0V (regulator on)
–
10
–
0.7
10
μ
A
–
10
–
1.5
10
μ
A
Thermal Shutdown @ T
J
160
°
C
Note 1.
Note 2.
Exceeding the absolute maximum rating may damage the device.
With input voltages above the operating rating, the device may be damaged if a short-circuit is applied to the output. The device will otherwise
not be damaged up to its absolute maximum voltage rating.
Absolute maximum rating is intended for voltage transients only, prolonged dc operation is not recommended.
Devices are ESD sensitive. Handling precautions recommended.
Measured on 1" square of 1 oz. copper FR4 printed circuit board connected to the device ground leads.
Note 3.
Note 4.
Note 5.
Operating Ratings
(Note 2)
Supply Voltage (V
IN
) ....................................... +4V to +30V
Junction Temperature Range (T
J
) ...........
–
40
°
C to +125
°
C
Package Thermal Resistance
(θ
JA
),
Note 5........................................................
63
°
C/W
(θ
JC
), ...................................................................20
°
C/W
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