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參數資料
| 型號： | LDRXXYY |
| 廠商： | 意法半導體 |
| 英文描述： | VERY LOW DROP DUAL VOLTAGE REGULATOR |
| 中文描述： | 極低降雙電壓調節器 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 384K |
| 代理商： | LDRXXYY |
1/13
August 2004
I
OUTPUT CURRENT 1 UP TO 500mA
OUTPUT CURRENT 2 UP TO 1.0A
LOW DROPOUT VOLTAGE 1
(0.3V @ I
O
=500mA)
LOW DROPOUT VOLTAGE 2
(0.4V @ I
O
=1A)
VERY LOW SUPPLY CURRENT (TYP.50μA
IN OFF MODE, 1.6mA MAX IN ON MODE)
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
OUTPUT VOLTAGE AVAILABILITY FOR
EACH REGULATOR: 1.8V, 2.5V, 3.3V
INTERNAL CURRENT AND THERMAL LIMIT
STABLE WITH LOW VALUE (MIN 4.7μF)
AND LOW E.S.R. OUTPUT CAPACITORS
SUPPLY VOLTAGE REJECTION: 70dB (TYP.)
TEMPERATURE RANGE (-40°C TO 125°C)
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I
I
I
I
I
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I
DESCRIPTION
The LDRxxyy is a Very Low Drop Dual Voltage
Regulator available in PPAK for the version
without inhibit and in SPAK-7L for the version with
the shutdown feature. The very low drop-voltage
(0.5V) and the very low supply current make it
particularly suitable for low noise and low power
applications such as PDA, MICRODRIVE and
other data storage applications while the used
high voltage technology makes this device
suitable for consumer applications such as
MONITORS AND SET-TOP-BOX. For each V
O
a
Shutdown Logic Control function is available (TTL
compatible) to
decrease
consumption.
the
total power
LDRxxyy
VERY LOW DROP
DUAL VOLTAGE REGULATOR
+
-
+
-
START UP 1
BAND GAP 1
DRIVER 1
POWER 1
THERMAL 1
THERMAL 2
START UP 2
BAND GAP 2
DRIVER 2
POWER 2
V
O1
V
O2
I
NH2
I
NH1
V
I2
V
I1
ERROR
AMPLIFIER 1
ERROR
AMPLIFIER 2
Figure 1: Block Diagram
PPAK
SPAK-7L
Rev. 2
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