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參數(shù)資料
| 型號： | LT1110CS8-5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Micropower DC-DC Converter Adjustable and Fixed 5V, 12V |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 70 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 310K |
| 代理商： | LT1110CS8-5 |
LT1110
13
Arrangement of the gain block as a low battery detector is
straightforward. Figure 12 shows hookup. R1 and R2 need
only be low enough in value so that the bias current of the
SET input does not cause large errors. 33k
for R2 is
adequate. R3 can be added to introduce a small amount of
hysteresis. This will cause the gain block to “snap” when
the trip point is reached. Values in the 1M-10M range are
optimal. The addition of R3 will change the trip point,
however.
U
S
A
O
PPLICATI
U
U
Output ripple of the LT1110, normally 90mV at 5V
OUT
can
be reduced significantly by placing the gain block in front
of the FB input as shown in Figure 13. This effectively
reduces the comparator hysteresis by the gain of the gain
block. Output ripple can be reduced to just a few millivolts
using this technique. Ripple reduction works with step-
down or inverting modes as well. For this technique to be
effective, output capacitor C1 must be large, so that each
switching cycle increases V
OUT
by only a few millivolts.
1000
μ
F is a good starting value.
Figure 13. Output Ripple Reduction Using Gain Block
Figure 12. Setting Low Battery Detector Trip Point
LT1110 TA07
V
BAT
R1
R2
220mV
REF
SET
GND
V
IN
LT1110
47k
+5V
TO
PROCESSOR
R1 =
V
LB
– 220mV
( )
V
LB
= BATTERY TRIP POINT
R2 = 33k
R3 = 2M
+
–
AO
R3
L1
LT1110 TA08
GND
SW2
SET
SW1
LIM
I
IN
V
D1
R3
270k
FB
+
V
OUT
R2
R1
C1
V = R2
LT1110
AO
V
BAT
Table 2. Capacitor Manufacturers
MANUFACTURER
Sanyo Video Components
2001 Sanyo Avenue
San Diego, CA 92173
619-661-6835
Nichicon America Corporation
927 East State Parkway
Schaumberg, IL 60173
708-843-7500
Sprague Electric Company
Lower Main Street
Sanford, ME 04073
207-324-4140
Matsuo
714-969-2491
PART NUMBERS
OS-CON Series
PL Series
150D Solid Tantalums
550D Tantalex
267 Series
Surface Mount
Table 3. Transistor Manufacturers
MANUFACTURER
Zetex
Commack, NY
516-543-7100
PART NUMBERS
ZTX Series
FZT Series
Surface Mount
Table 1. Inductor Manufacturers
MANUFACTURER
Coiltronics International
984 S.W. 13th Court
Pompano Beach, FL 33069
305-781-8900
Sumida Electric Co. USA
708-956-0666
PART NUMBERS
CTX100-4 Series
Surface Mount
CD54
CDR74
CDR105
Surface Mount
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相關代理商/技術參數(shù) |
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|---|---|
| LT1110CS8-5#PBF | 功能描述:IC REG BUCK BOOST 5V 0.4A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LT1110CS8-5#TR | 功能描述:IC REG BUCK BOOST 5V 0.4A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LT1110CS8PBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up/Down 1-30V SOIC8 |
| LT1111 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
| LT1111_03 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Micropower DC/DC Converter Adjustable and Fixed 5V, 12V |
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