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參數(shù)資料
| 型號： | AMS4155S |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 英文描述： | 2A OUTPUT PWM BUCK CONVERTER |
| 中文描述： | 甲變換器輸出 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 398K |
| 代理商： | AMS4155S |
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4155
ABSOLUTE MAXIMUM RATINGS
V
IN
F/B
EN
BST
Junction Temperature
Storage Temperature
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at T
A
= 25
°
C and VIN=12V (unless otherwise noted).
PARAMETER
28V
LX
COMP
SYNC
-1V to +28V
-0.3V to +6V
-0.3v to +6V
-0.3V to +6V
-0.3V to +6V
VLX + 6V
+150
°
C
-65
°
C to +150
°
C
260
°
C
TEST CONDITIONS
AMS4155
Min. Typ. Max.
Units
Feedback Voltage
Switch On Resistance
Switch Leakage
Current Limit
(1)
Current Amplifier Gain
4.75V
≤
V
IN
≤
20V, V
COMP
< 2V
1.215
1.255
1.285
V
0.18
V
EN
= 0V; VLX = 0V
0
10
6
μA
A
3.4
4
1.9
A/V
Error Amplifier Voltage Gain
Error Amplifier Transconductance
Oscillator Frequency
Sync Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Enable Threshold
Enable Hysteresis
Enable Pull-up Current
Under Voltage Lockout
Threshold Rising
Under Voltage Lockout
Threshold Hysteresis
Supply Current (Shutdown)
Supply Current (Quiescent)
Thermal Shutdown
Note:
1) Equivalent output current = 1.5A
≥
50% Duty Cycle
2.0A
≤
50% Duty Cycle
Assumes ripple current = 30% of load current.
I
C
= ± 10μA
Sync Drive 0.5V to 2.7V
V
FB
= 1.0V
V
FB
= 1.5V
400
730
460
85
V/V
μ
A/V
KHz
MHz
%
%
V
mV
μ
A
V
mV
μ
A
mA
°
C
420
0.460
2.2
500
1.1
3.2
2.55
2.6
2.475
220
0.7
2.5
200
17
0.95
153
2.4
V
EN
≤
0.4V
V
EN
≥
2.8V; V
FB
= 1.5V
25
1.1
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