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參數(shù)資料
| 型號： | SC4540ULTRT |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 920 kHz SWITCHING FREQ-MAX, DSO8 |
| 封裝： | 2 X 2 MM, ROHS COMPLIANT, MLPD-8 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 281K |
| 代理商： | SC4540ULTRT |
3
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not recommended.
NOTES:
(1)
Tested according to JEDEC standard JESD22-A114-B.
(2)
Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
Absolute Maximum Ratings
Supply Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +20.0
LX Voltage, Output Voltage (V) . . . . . . . . . . . . . -0.3 to +45
Current Sink Voltage (V) . . . . . . . . . . . . . . . . . . . . -0.3 to +45
Enable Voltage (V) . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V
IN
+ 0.3)
Compensation Voltage (V) . . . . . . . . . . . . . . . . . . -0.3 to +2.0
Current Set Voltage (V) . . . . . . . . . . . . . . . . . . . . . . -0.3 to +2.0
ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SC4540
Recommended Operating Conditions
Supply Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8 to 12
Output Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 to 38
Ambient Temperature Range (°C) . . . . . . . . . . . . . -40 to +85
Thermal Information
Thermal Resistance, Junction to Ambient(2) (°C/W) . . . . . 74
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . +150
Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +150
Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +260
Parameter
Symbol
Conditions
Min
Typ
Max
Units
UVLO Threshold
V
UVLO
V
IN
rising
2.40
2.60
2.79
V
UVLO Hysteresis
V
UVLO-HYS
120
mV
Quiescent Supply Current
I
Q
Not switching
1.9
mA
Shutdown Supply Current
I
SHDN
EN tied to GND
0.1
3
μA
EN Logic High Voltage
V
IN
1.80
V
EN Logic Low Voltage
V
IL
0.8
V
EN Logic Input Current
I
IL,
I
IH
V
IN
= 12V, V
EN
= 0V to 1.8V
±0.01
±1
μA
V
IN
= 12V, V
EN
= 1.8V to 12V
±0.01
±5
Thermal Shutdown Temperature
T
SD
T
J
rising
155
°C
Thermal Shutdown Hysteresis
20
°C
Boost Converter Characteristics
Switching Frequency
f
SW
680
800
920
kHz
Maximum Duty Cycle
D
MAX
T
A
= 25°C
92
%
Minimum On-Time
t
ON(MIN)
100
ns
Unless otherwise noted: V
IN
= 7.2V, C
IN
= 2.2μF, C
OUT
= 1μF, C
COMP
= 47nF, R
COMP
= 1.27kΩ, R
ISET
= 5.76kΩ, L = 56μH, T
A
= -40 to 85C, typical values are at T
A
= 25C.
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