參數(shù)資料
型號： TC120303EHA
廠商： Microchip Technology Inc.
英文描述： PWM/PFM Step-Down Combination Regulator/Controller
中文描述： PWM / PFM切換降壓組合穩(wěn)壓器/控制器
文件頁數(shù)： 2/14頁
文件大?。?/td> 436K
代理商： TC120303EHA
TC120
DS21365B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Power Supply Voltage (V
IN
)....................-0.3V to +12V
Voltage on V
OUT
Pin...............................-0.3V to +12V
Voltage on LX, Boost Pins
................................... (V
IN
– 12V) to (V
IN
+ 0.3V)
Voltage on EXT1, EXT2, SHDN Pins
.......................................... (-0.3V) to (V
IN
+ 0.3V)
L
X
Pin Current ..............................................700mA pk
EXT1, EXT2 Pin Current...................................±50mA
Continuous Power Dissipation .........................300mW
Operating Temperature Range.............-40°C to +85°C
Storage Temperature Range..............-40°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC120 ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
Test circuit of Figure 3-1, T
A
= 25
°
C, V
IN
= V
R
x 1.2, Note 1 unless otherwise noted.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
V
OUT
Output Voltage
V
R
x 0.975 V
R
± 0.5% V
R
x 1.025
V
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
I
OUT
= 120mA (Note 1)
I
OUT
= 132mA
I
OUT
= 200mA
V
IN
I
OUT
MAX
Input Voltage
Maximum Output Current
1.8
500
600
600
—
—
—
—
—
52
55
71
1.5
—
1.5
0.69
0.64
0.44
10.0
—
—
—
82
86
110
2.5
2
2.5
0.94
0.85
0.58
V
mA
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
No load, SHDN = 0V, (Note 2)
Measured at EXT1 Pin (Note 2)
No load, SHDN = 0V
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
Resistor from L
X
to V
IN
,
SHDN = V
IN
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
V
EXT1
= V
EXT2
= (V
IN
– 0.4V);
V
OUT
= V
IN
(Note 2)
V
OUT
= 3.0V
V
OUT
= 3.3V
V
OUT
= 5.0V
resistance of 200
to a voltage
such that VEXT1, 2 = 0.4V
Measured at EXT1 Pin,
V
IN
= V
OUT
+ 0.3V,
I
OUT
= 20mA (Note 3)
I
IN
Supply Current
μ
A
V
IN
= V
R
x 1.05, no load
I
SHDN
I
LX
Shutdown Supply Current
LX Pin Leakage Current
—
—
—
—
—
—
μ
A
μ
A
R
DSON
(
L
X
)
LX Pin ON Resistance
V
OUT
= V
R
x 0.9 (Note 2)
V
LX
= V
IN
– 0.2V, 10
R
EXTH
EXT1, EXT2
On Resistance to V
IN
—
—
—
38
35
24
52
47
32
SHDN = V
IH
; EXT1 and EXT2
connected to 200
load,
R
EXTL
EXT1, EXT2
On Resistance to GND
—
—
—
31
29
20
41
37
26
SHDN = V
IH
; EXT1 and EXT2
pulled up through a series
f
OSC
Oscillator Frequency
255
300
345
kHz
D
PWM
D
PFM
η
Maximum PWM Duty Cycle
PFM Duty Cycle
Efficiency
—
15
—
—
25
95
100
35
—
%
%
%
No load
V
IN
> V
R
x 1.2
Note
1:
2:
3:
V
is the factory-programmed output voltage setting.
No external components connected, except C
SS.
While operating in PWM Mode.
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相關代理商/技術參數(shù)
參數(shù)描述
TC120303EHATR 功能描述:開關變換器、穩(wěn)壓器與控制器 PWM/PFM Step-Down 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TC120333EHA 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM/PFM Step-Down Combination Regulator/Controller
TC120333EHATR 功能描述:開關變換器、穩(wěn)壓器與控制器 PWM/PFM Step-Down 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TC120503EHA 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM/PFM Step-Down Combination Regulator/Controller
TC120503EHATR 功能描述:開關變換器、穩(wěn)壓器與控制器 PWM/PFM Step-Down 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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