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參數(shù)資料
| 型號(hào)： | LT1308 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Single Cell High Current Micropower 600kHz Boost DC/DC Converter |
| 中文描述： | 單細(xì)胞微600kHz的高電流升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 266K |
| 代理商： | LT1308 |
5
LT1308
PI
FU
CTIO
N
S
U
U
SW (Pin 5):
Switch Pin. Connect inductor/diode here.
Minimize trace area at this pin to keep EMI down.
V
IN
(Pin 6):
Supply Pin. Must have local bypass capacitor
right at the pin, connected directly to ground.
LBI (Pin 7):
Low-Battery Detector Input. 200mV refer-
ence. Voltage on LBI must stay between ground and
700mV. Low-battery detector does not function with
SHDN pin grounded. If not used, float LBI pin.
LBO (Pin 8):
Low-Battery Detector Output. Open collec-
tor, can sink 10
μ
A. A 1M
pullup is recommended. LBO
is high impedance when SHDN is grounded.
BLOCK DIAGRA
M
W
–
+
–
+
–
+
–
+
–
+
+
+
Σ
COMPARATOR
RAMP
GENERATOR
R
BIAS
V
C
1
g
m
Q2
×
10
R3
30k
Q1
FB
FB
2
ENABLE
200mV
A = 3
FF
A2
A1
ERROR
AMPLIFIER
A4
0.03
DRIVER
SW
5
GND
1308 BD
Q3
Q
S
600kHz
OSCILLATOR
LBO
8
LBI
7
SHDN
3
SHUTDOWN
4
R6
40k
R5
40k
R1
(EXTERNAL)
R4
140k
V
IN
6
V
IN
V
OUT
R2
(EXTERNAL)
LAYOUT HINTS
The LT1308 switches current at high speed, mandating
careful attention to layout for proper performance. You will
not get advertised performance with careless layouts.
Figure 2 shows recommended component placement.
Follow this closely in your PC layout. Note the direct path
of the switching loops. Input capacitor C
IN
must be placed
close (<5mm) to the IC package. As little as 10mm of wire
or PC trace from C
IN
to V
IN
will cause problems such as
inability to regulate or oscillation. A 10
μ
F ceramic bypass
capacitor is the only input capacitance required provided
the battery has a low inductance path to the circuit The
battery itself provides the bulk capacitance the device
requires for proper operation. If the battery is located some
APPLICATIO
S I
N
FOR
ATIO
U
W
U
Figure 2. Recommended Component Placement. Traces
Carrying High Current Are Direct. Trace Area at FB Pin and V
C
Pin is Kept Low. Lead Length to Battery Should Be Kept Short.
Ground Plane Should Be Placed Under All Components
1
2
3
4
8
7
6
5
L
C
IN
C
OUT
D
LT1308
V
OUT
V
IN
GND
MULTIPLE
VIAs
GROUND PLANE
1308 F02
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1308A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Current, Micropower Single Cell, 600kHz DC/DC Converters |
| LT1308A_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Current, Micropower Single Cell, 600kHz DC/DC Converters |
| LT1308ACF | 功能描述:IC REG BOOST 5V 1A 14TSSOP 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:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| LT1308ACF#PBF | 功能描述:IC REG BOOST 5V 1A 14TSSOP RoHS:是 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:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| LT1308ACF#TR | 功能描述:IC REG BOOST 5V 1A 14TSSOP 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:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
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