參數(shù)資料
型號(hào)： MIC4685BR
廠商： MICREL INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 3A SPAK SuperSwitcher⑩ Buck Regulator
中文描述： SWITCHING REGULATOR, 225 kHz SWITCHING FREQ-MAX, PSSO7
封裝： SPAK-7
文件頁(yè)數(shù)： 3/15頁(yè)
文件大?。?/td> 154K
代理商： MIC4685BR
MIC4685
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
IN
),
Note 1 ......................................
+34V
Enable Voltage (V
EN
) ....................................
–
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 3 .......................................................
2kV
Micrel
September 2002
3
MIC4685
Electrical Characteristics
V
IN
= V
EN
=
12V, V
OUT
= 5V; I
OUT
= 500mA; T
A
= 25
°
C, unless otherwise noted.
Bold
values indicate
–
40
°
C
≤
T
J
≤
+125
°
C.
Parameter
Condition
Min
Typ
Max
Units
Feedback Voltage
(
±
2%)
(
±
3%)
1.210
1.198
1.235
1.260
1.272
V
V
8V
≤
V
IN
≤
30V, 0.1A
≤
I
LOAD
≤
1A, V
OUT
= 5V,
Note 4
1.186
1.173
1.235
1.284
1.297
V
V
Feedback Bias Current
50
nA
Maximum Duty Cycle
V
FB
= 1.0V
V
IN
= 30V, V
EN
= 0V, V
SW
= 0V
V
IN
= 30V, V
EN
= 0V, V
SW
=
–
1V
V
FB
= 1.5V
V
FB
= 1.5V, V
SW
= 0V
I
BS
= 10mA, V
FB
= 1.5V, V
SW
= 0V
V
FB
= 0V
94
%
Output Leakage Current
5
500
μ
A
1.4
20
mA
Quiescent Current
6
12
mA
Bootstrap Drive Current
250
380
mA
Bootstrap Voltage
5.5
6.2
V
Frequency Fold Back
30
70
120
kHz
Oscillator Frequency
180
200
225
kHz
Saturation Voltage
I
OUT
= 1A
V
FB
= 0V, See Test Circuit
V
EN
= 0V
regulator on
0.59
V
Short Circuit Current Limit
3.5
6
A
Shutdown Current
150
200
μ
A
Enable Input Logic Level
2
V
regulator off
0.8
V
Enable Pin Input Current
V
EN
= 0V (regulator off)
V
EN
= 12V (regulator on)
16
50
μ
A
–
1
–
0.83
mA
Thermal Shutdown @ T
J
160
°
C
Note 1.
Note 2.
Note 3.
Note 4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k
in series with 100pF.
2.5V of headroom is required between V
IN
and V
OUT
. The headroom can be reduced by implementing a bootstrap diode as seen on the 5V to
3.3V circuit on page 1.
Operating Ratings
(Note 2)
Supply Voltage (V
IN
)
Note 4 ...........................
+4V to +30V
Junction Temperature (T
J
) .......................
–
40
°
C to +125
°
C
Package Thermal Resistance
θ
JA
, SPAK-7 Lead ............................................11.8
°
C/W
θ
JC
, SPAK-7 Lead ..............................................2.2
°
C/W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC4685BR TR 功能描述:IC REG BUCK ADJ 3A SPAK-7 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:SuperSwitcher™ 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓（降壓） 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12
MIC4685BRTR 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
MIC4685WR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 3A Buck Regulator in SPAK-7 (ROHS Compliant) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC4685WR TR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 3A Buck Regulator in SPAK-7 (ROHS Compliant) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC4685WREV 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:3A SPAK SuperSwitcher Buck Regulator
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