參數(shù)資料
型號(hào)： LTC3202EMS
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Low Noise, High Efficiency Charge Pump for White LEDs
中文描述： SWITCHED CAPACITOR CONVERTER, 1500 kHz SWITCHING FREQ-MAX, PDSO10
封裝： PLASTIC, MSOP-10
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 249K
代理商： LTC3202EMS
1
LTC3202
3202fa
APPLICATIU
FEATURES
DESCRIPTIOU
TYPICAL APPLICATIOU
I
White LED Backlighting
I
Programmable Boost Current Source
I
Low Noise Constant Frequency Operation
I
25% Less Input Current Than Doubler Charge Pump
I
High Output Current: Up To 125mA
I
Small Application Circuit
I
Regulated Output Voltage or Current
I
Automatic Soft-Start
I
V
IN
Range: 2.7V to 4.5V
I
No Inductors
I
1.5MHz Switching Frequency
I
I
CC
< 1
μ
A in Shutdown
I
Available in 10-Pin MSOP and 3mm
×
3mm
DFN Packages
Low Noise, High Efficiency
Charge Pump for White LEDs
The LTC
3202 is a low noise, constant frequency charge
pump DC/DC converter that uses fractional conversion to
increase efficiency in white LED applications. The part can
be used to produce a regulated voltage or current of up to
125mA from a 2.7V to 4.5V input. Low external parts count
(two flying capacitors and two small bypass capacitors at
V
IN
and V
OUT
) make the LTC3202 ideally suited for small,
battery-powered applications.
An internal 2-bit DAC allows LED current to be adjusted for
LED brightness control. The LTC3202 also has thermal
shutdown protection and can survive a continuous short-
circuit from V
OUT
to GND. Built-in soft-start circuitry
prevents excessive inrush current during start-up. High
switching frequency enables the use of small external
capacitors. A low current shutdown feature disconnects
the load from V
IN
and reduces quiescent current to less
than1
μ
A.
The LTC3202 is available in the 10-pin MSOP and 3mm
×
3mm DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Programmable White LED Power Supply
3202 TA01
LTC3202
V
OUT
FB
GND
C4
1
μ
F
C1
1
μ
F
5, 11
3
2
C2
–
C2
+
C1
–
C1
+
D0
CURRENT
PROGRAMMING
V
IN
3V TO 4.5V
10
4
1
36
36
36
36
36
36
C3
1
μ
F
C2
1
μ
F
D1
V
IN
8
7
9
6
C1, C2, C3, C4 = MURATA GRM 39X5R105K6.3 OR TAIYO YUDEN JMK107BJ105MA
0mA TO 125mA
TOTAL CURRENT
V
IN
(AC COUPLED)
20mV/DIV
V
(AC COUPLED)
20mV/DIV
500ns/DIV
V
IN
= 3.6V
C
IN
= C
= 1
μ
F
I
OUT
= 60mA
3202 G09
Input and Output Ripple
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3202EMS#PBF 功能描述:IC LED DRVR WHITE BCKLGT 10-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?開路漏極，PWM 輸出數(shù):4 內(nèi)部驅(qū)動(dòng)器:是 類型 - 主要:LED 閃爍器 類型 - 次要:- 頻率:400kHz 電源電壓:2.3 V ~ 5.5 V 輸出電壓:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-HVSON 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C 其它名稱:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3202EMS#TR 功能描述:IC LED DRVR WHITE BCKLGT 10-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?開路漏極，PWM 輸出數(shù):4 內(nèi)部驅(qū)動(dòng)器:是 類型 - 主要:LED 閃爍器 類型 - 次要:- 頻率:400kHz 電源電壓:2.3 V ~ 5.5 V 輸出電壓:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-HVSON 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C 其它名稱:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3202EMS#TRPBF 功能描述:IC LED DRVR WHITE BCKLGT 10-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:6,000 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?開路漏極，PWM 輸出數(shù):4 內(nèi)部驅(qū)動(dòng)器:是 類型 - 主要:LED 閃爍器 類型 - 次要:- 頻率:400kHz 電源電壓:2.3 V ~ 5.5 V 輸出電壓:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-HVSON 包裝:帶卷 (TR) 工作溫度:-40°C ~ 85°C 其它名稱:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
LTC3203 制造商:LINER 制造商全稱:Linear Technology 功能描述:500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
LTC3203-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
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