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參數(shù)資料
| 型號(hào)： | LT1313CS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Dual PCMCIA VPP Driver/Regulator |
| 中文描述： | 12 V FIXED POSITIVE LDO REGULATOR, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SO-16 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 252K |
| 代理商： | LT1313CS |
6
LT1313
OPERATIO
The LT1313 is two programmable output voltage,low-
dropout linear regulators designed specifically for PCMCIA
VPP drive applications. Input power is typically obtained
from a loosely regulated input supply between 13V and
20V. The LT1313 consists of the following blocks:
Two Low Dropout Voltage Linear Regulators:
The heart
of the LT1313 is two PNP-based low-dropout voltage
regulators which drop the unregulated supply voltage
from 13V to 20V down to 12V, 5V, 3.3V, 0V or Hi-Z
depending upon the state of the four Enable inputs and the
two V
CC
Sense inputs. The regulators have built-in current
limiting and thermal shutdown to protect the device, the
loads, and the sockets against inadvertent short circuiting
to ground.
Voltage Control Logic:
The two VPP
OUT
outputs have five
possible output modes: 0V, 3.3V, 5V, 12V and Hi-Z. These
five modes are selected by the four Enable inputs and the
two V
CC
Sense inputs as described by the Truth Table.
V
CC
Sense Comparators:
When the V
CC
mode is selected,
the LT1313 automatically adjusts each regulated VPP
output
voltage to 3.3V or 5V depending upon the voltage present
U
at the corresponding PC card V
CC
supply pin. The thresh-
old voltage for these comparators is set at 4V and there is
approximately 50mV of hysteresis provided to ensure
clean switching between 3.3V and 5V.
VPP
VALID Comparator:
Two voltage comparators moni-
tor each output voltage when the 12V mode is selected and
are driven low when the output is in regulation above 11V.
These two outputs function separately.
AEN0
0
1
0
0
1
X = Don’t Care
AEN1
0
0
1
1
1
ASENSE
X
X
3.0V to 3.6V
4.5V to 5.5V
X
AVPP
OUT
0V
12V
3.3V
5V
Hi-Z
AVALID
1
0
1
1
1
LT1313 Truth Table
BEN0
0
1
0
0
1
Note: Each channel is independently controlled.
BEN1
0
0
1
1
1
BSENSE
X
X
3.0V to 3.6V
4.5V to 5.5V
X
BVPP
OUT
0V
12V
3.3V
5V
Hi-Z
BVALID
1
0
1
1
1
The LT1313 is two voltage programmable linear regula-
tors designed specifically for PCMCIA VPP driver applica-
tions. The device operates with very low quiescent current
(60
μ
A) in the 0V and Hi-Z modes of operation. In the Hi-Z
mode, the output leakage current falls to 1
μ
A. In addition
to the low quiescent currents, the LT1313 incorporates
several protection features which make it ideal for PCMCIA
applications. The LT1313 has built-in current limiting
(330mA) and thermal shutdown to protect the device and the
socket VPP pins against inadvertent short-circuit conditions.
Output Capacitance
The LT1313 is designed to be stable with a wide range of
output capacitors. The minimum recommended value is a
1
μ
F with an ESR of 3
or less. The capacitor is connected
directly between the output pin and ground. For applications
where space is very limited, capacitors as low as 0.33
μ
F can
APPLICATIO
S I
FOR
ATIO
U
W
U
U
be used. Extremely low ESR ceramic capacitors with values
less than 1
μ
F must have a 2
resistor added in series with
the output capacitor.
Transient and Switching Performance
The LT1313 is designed to produce minimal overshoot
with capacitors in the range of 1
μ
F to 10
μ
F. Larger
capacitor values can be used with a slowing of rise and
fall times.
The positive output slew rate is determined by the 330mA
current limit and the output capacitor. The rise time for a
0V to 12V transition is approximately 40
μ
s and the rise
time for a 10
μ
F capacitor is roughly 400
μ
s (see the
Transient Response curves in the Typical Performance
Characteristics section).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1313CS#PBF | 功能描述:IC DRV/REG PCMCIA VPP DL 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| LT1313CS#TR | 功能描述:IC DRIVER/REG VPP PCMCIA 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| LT1313CS#TRPBF | 功能描述:IC DRV/REG PCMCIA VPP DL 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| LT1316 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter |
| LT1316CMS8 | 功能描述:IC REG BST FLYBK ADJ 0.5A 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
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