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參數(shù)資料
| 型號： | MCP1612 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Single 1A, 1.4 MHz Synchronous Buck Regulator |
| 中文描述： | 單1A條，1.4 MHz的同步降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大?。?/td> | 230K |
| 代理商： | MCP1612 |
MCP1612
DS21921B-page 4
2005 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings
V
IN
– A
GND
.......................................................................6.0V
(SHDN, FB, V
CC
, Comp........... (A
GND
– 0.3V) to (V
IN
+ 0.3V)
L
X
to P
GND
.............................................. -0.3V to (V
IN
+ 0.3V)
P
GND
to A
GND
...................................................-0.3V to +0.3V
Output Short Circuit Current .................................Continuous
Storage temperature .....................................-65°C to +150°C
Ambient Temp. with Power Applied.................-40°C to +85°C
Operating Junction Temperature...................-40°C to +125°C
ESD protection on all pins (HBM)
.......................................
4 kV
ESD protection on all pins (MM)
.........................................
300V
Notice:
Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise noted, V
IN
= V
CC
= V
SHDN
= 3.3V, V
OUT
= 1.8V, C
IN
= C
OUT
= 10 μF, L = 3.3 μH,
I
LOAD
= 100 mA, T
A
= +25°C.
Boldface
specifications apply over the T
A
range of -40°C to +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Input Voltage
Input Operating Voltage
V
IN
I(V
IN
)
I(V
IN
)
2.7
—
5.5
V
Input Shutdown Current
—
0.01
1
μA
Shutdown mode (SHDN = GND)
Input Quiescent Current
—
5
7
mA
I
LOAD
= 0 mA
Oscillator Characteristics
Internal Oscillator Frequency
F
OSC
1.2
1.4
1.6
MHz
Internal Power Swicthes
R
DSon
P-Channel
R
DSon
N-Channel
L
X
Pin Leakage Current
R
DSon-P
R
DSon-N
I
LX
—
300
—
m
Ω
m
Ω
I
P
= 250 mA
I
N
= 250 mA
SHDN = 0V, V
IN
= 5.5V, L
X
= 0V,
L
X
= 5.5V
—
300
—
-1
—
1
μA
Positive Current Limit Threshold
+I
LX(MAX)
-I
LX(MAX)
—
2.3
—
A
Negative Current Limit Threshold
—
-1.4
—
A
Feedback Characteristics
Transconductance from FB to
COMP
g
m
35
62
90
μA/V
Output Voltage
Output Voltage Range
V
OUT
V
FB
I
VFB
V
LINE-REG
V
LOAD-REG
0.8
—
V
IN
0.82
V
Reference Feedback Voltage
0.78
0.8
V
Feedback Input Bias Current
—
1
—
nA
Line Regulation
—
0.15
0.5
%/V
V
IN
= 2.7V to 5.5V, I
LOAD
= 100 mA
V
IN
= 4.2V, I
LOAD
= 100 mA to 1A
Load Regulation
—
0.25
—
%
Note
1:
The integrated MOSFET switches have an integral diode from the L
X
pin to V
IN
and from L
X
to P
GND
. In cases where
these diodes are forward-biased, the package power dissipation limits must be adhered to. Thermal protection is not
able to regulate the junction temperature for these cases.
UVLO is specified for a falling V
IN
. Once the UVLO is activated, the UVLO-
HYS
must be overcome before the device will
return to operation.
2:
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| MCP1612_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator |
| MCP1612-120I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-150I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-180I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-250I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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