參數(shù)資料
型號(hào)： LTC1735IGN-1
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： LED Lamp; Bulb Size:3mm; LED Color:Orange/Orange; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):No; Reel Quantity:360 RoHS Compliant: Yes
中文描述： 3 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù)： 22/32頁
文件大?。?/td> 373K
代理商： LTC1735IGN-1
22
LTC1735
APPLICATIU
W
U
U
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C
OSC
RUN/SS
I
TH
FCB
SGND
V
OSENSE
SENSE
–
SENSE
+
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
U1
LTC1735
C2
0.1
μ
F
C8
0.22
μ
F
C4
100pF
C5
47pF
C3
100pF
R2
100k
R1
27k
R5
0.003
GND
V
1.5V
15A
V
IN
7.5V TO
24V
GND
C6
1000pF
C1
39pF
+
C10
4.7
μ
F
10V
C9
1
μ
F
5V (OPTIONAL)
C11
330pF
C19
1
μ
F
+
C15 TO
C18
180
μ
F
4V
C7
0.1
μ
F
M1
FDS6680A
M2, M3
FDS6680A
×
2
C9, C19: TAIYO YUDEN JMK107BJ105
C10: KEMET T494A475M010AS
C12 TO C14: TAIYO YUDEN GMK325F106
C15 TO C18: PANASONIC EEFUE0G181R
D1: CENTRAL SEMI CMDSH-3
D2: MOTOROLA MBRS340
L1: PANASONIC ETQP6F1R0SA
M1 TO M3: FAIRCHILD FDS6680A
R5: IRC LRF2512-01-R003-J
U1: LINEAR TECHNOLOGY LTC1735CS
1735 F08
D1
CMDSH-3
R6
10k
R7
11.5k
D2
MBRS340
C12 TO C14
10
μ
F
35V
L1
1
μ
H
R4
100k
R3
680k
Figure 8. CPU-Core-Voltage Regulator with Active Voltage Positioning
voltage cannot exceed
±
0.082V. At V
OUT
= 1.5V, the
maximum output voltage change controlled by the I
TH
pin
would be:
=
=±
= ±
V
InputOffset V
V
V
V
.
0 8
mV
OSENSE
OUT
REF
1 5
.
0 03
56
With the optimum resistor values at the I
TH
pin, the output
voltage will swing from 1.55V at minimum load to 1.44V
at full load. At this output voltage, active voltage position-
ing provides an additional
±
56mV to the allowable tran-
sient voltage on the output capacitors, a 68% improve-
ment over the
±
82mV allowed without active voltage
positioning.
The next step is to calculate the I
TH
pin voltage, V
ITH
, scale
factor. The V
ITH
scale factor reflects the I
TH
pin voltage
required for a given load current. V
ITH
controls the peak
sense resistor voltage, which represents the DC output
current plus one half of the peak-to-peak inductor current.
The no load to full load V
ITH
range is from 0.3V to 2.4V,
which controls the sense resistor voltage from 0V to the
V
SENSE(MAX)
voltage of 75mV. The calculated V
ITH
scale
factor with a 0.003
sense resistor is:
V
Range Sense
ITH
=
V
ScaleFactor
sistor Value
V
)0 003
V
V
V
V A
/
ITH
SENSE MAX
=
=
Re
(2 4
–0 3
0 075
.
.
(
)
0 084
V
ITH
at any load current is:
V
I
I
V
ScaleFactor
V
Offset
ITH
OUTDC
L
ITH
ITH
=
+
+
2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1735IGN-1#PBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1735IGN-1#TR 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1735IGN-1#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1735IGNPBF 制造商:Linear Technology 功能描述:High Efficiency Buck Regulator SSOP16
LTC1735IGNTRPBF 制造商:Linear Technology 功能描述:
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