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参数资料
| 型号： | L6902D013TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 287 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | SO-8 |
| 文件页数： | 3/7页 |
| 文件大小： | 125K |
| 代理商： | L6902D013TR |
3/7
L6902D
Figure 4. Internal Block Diagram
Table 5. Electrical Characteristcs
(Tj = 25°C, VCC = 12V, unless otherwise specified.) () Specification Referred to Tj from 0 to 125°C.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VCC
Operating input voltage range
VO = 1.235V; IO = 1A
8
36
V
Vd
Dropout voltage
VCC = 8V; IO = 1A
0.25
0.5
V
IO
Operating charging current
Rsense = 0.1
0.9511.05
A
0.92
1.08
A
Il
Maximum limiting current
VCC = 8V to 36V
2
2.5
3.2
A
fs
Switching frequency
212
250
287
kHz
225
250
275
kHz
d
Duty cycle
0
100
%
DYNAMIC CHARACTERISTICS
V5
Voltage feedback (FB)
8V < VCC < 36V,
20mA < IO < 1A
1.21
1.235
1.259
V
1.198
1.235
1.272
V
η
Efficiency
VO = 5V, VCC = 12V
90
%
DC CHARACTERISTICS
Iqop
Total operating quiescent
current
3
5
mA
Iq
Quiescent current
Duty cycle = 0; VFB = 1.5V
3
mA
VREF
GOOD
3.8V
COMP
VFB
DRIVER
INHIBIT
+
-
1.235V
E/A
1.235V
THERMAL
SHUTDOWN
-
+
PWM
OSCILLATOR
OUT
Vcc
GND
Vref
SUPPLY
TRIMMING
FREQUENCY
SHIFTER
VOLTAGES
MONITOR
D
Q
CK
CURRENT LIMITING
PEAK TO PEAK
+
-
Current_E/A
Voltage_E/A
CS-
CS+
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