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參數資料
| 型號： | FAN5601MP18X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Regulated Step-Down Charge Pump DC/DC Converter |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, DSO6 |
| 封裝： | 3 X 3 MM, MO-229WEEA, MLP-6 |
| 文件頁數： | 11/14頁 |
| 文件大小： | 433K |
| 代理商： | FAN5601MP18X |
FAN5601
PRODUCT SPECIFICATION
REV. 1.0.4 4/4/05
11
charge cycle. Full switch operation occurs only during star-
tup or under heavy load condition, when half switch opera-
tion cannot achieve regulation within seven charge cycles.
Soft Start
The soft-start feature limits inrush current when the device is
initially powered up and enabled. The reference voltage is
used to control the rate of the output voltage ramp-up to its
final value. Typical start-up time is 1ms. Since the rate of the
output voltage ramp-up is controlled by an internally gener-
ated slow ramp, pulse-skipping occurs and inrush current is
automatically limited.
Shutdown, UVLO, Short Circuit Current Limit
and Thermal Shutdown
The device has an active-low shutdown pin to decrease sup-
ply current to less than 1
μ
A. In shutdown mode the supply is
disconnected from the output. UVLO triggers when supply
voltage drops below 2V. When the output voltage is lower
than 150mV, a short circuit protection is triggered. In this
mode 15 out of 16 pulses during the switching will be
skipped and the supply current is limited. Thermal shutdown
triggers at 150oC.
Switch Configuration
S1
S2
S3
S4
V
IN
GND
C+
VOUT
C-
C
OUT
2:1 configuration
Switches in charging phase
Reverse all switches for pumping phase
C
B
S1
S3
S4
V
IN
GND
C+
VOUT
C-
C
OUT
1:1 configuration
Switch 3 is always off and
Switch 4 is always on
Switches 1 and 2 are in phase 1
Reverse the position of switches 1&2
for phase 2
C
S2
Figure 1. (A)
Figure 1. (B)
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