DataSheet.jp

LTC3202 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 LTC3202
部品説明 Low Noise/ High Efficiency Charge Pump for White LEDs
メーカ Linear Technology
ロゴ Linear Technology ロゴ 

Total 13 pages
		

No Preview Available !

LTC3202 Datasheet, LTC3202 PDF,ピン配置, 機能
LTC3202
Low Noise, High Efficiency
Charge Pump for White LEDs
FEATURES
s Low Noise Constant Frequency Operation
s 25% Less Input Current Than Doubler Charge Pump
s High Output Current: Up To 125mA
s Small Application Circuit
s Regulated Output Voltage or Current
s Automatic Soft-Start
s VIN Range: 2.7V to 4.5V
s No Inductors
s 1.5MHz Switching Frequency
s ICC < 1µA in Shutdown
s Available in 10-Pin MSOP and 3mm × 3mm
DFN Packages U
APPLICATIO S
s White LED Backlighting
s Programmable Boost Current Source
DESCRIPTIO
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
VIN and VOUT) 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 VOUT 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 VIN and reduces quiescent current to less
than1µA.
The LTC3202 is available in the 10-pin MSOP and 3mm ×
3mm DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Programmable White LED Power Supply
C2 C3
1µF 1µF
8 79 6
C1+
10 D0
CURRENT
C1
C2+
C2
0mA TO 125mA
3 TOTAL CURRENT
VOUT
PROGRAMMING 1 D1 LTC3202
VIN
3V TO 4.5V
C1
1µF
4 VIN
2
FB
GND
5, 11
C4
1µF
36
36
36
36
3636
C1, C2, C3, C4 = MURATA GRM 39X5R105K6.3 OR TAIYO YUDEN JMK107BJ105MA
3202 TA01
Input and Output Ripple
VIN
(AC COUPLED)
20mV/DIV
VOUT
(AC COUPLED)
20mV/DIV
VIN = 3.6V
500ns/DIV
CIN = COUT = 1µF
IOUT = 60mA
3202 G09
3202fa
1

1 Page





ページ 合計 : 13 ページ
PDF
ダウンロード
[ LTC3202.PDF ]

共有リンク

Link :

おすすめデータシート

部品番号部品説明メーカ
LTC3200

There is a function of Regulated Charge Pump DC/DC Converters.

Linear Technology
Linear Technology
LTC3200-5

There is a function of Regulated Charge Pump DC/DC Converters.

Linear Technology
Linear Technology
LTC3201

There is a function of 100mA Ultralow Noise Charge Pump Led Supply.

Linear Technology Corporation
Linear Technology Corporation
LTC3202

There is a function of Low Noise/ High Efficiency Charge Pump for White LEDs.

Linear Technology
Linear Technology

多くを見つけるデータシート

部品番号部品説明メーカ
82S129

The 82S126 and 82S129 are field programmable, which means that custom patterns are immediately available by following the Signetics Generic fusing procedure. 1K-bit TTL Bipolar PROM, Address access time : 50ns max.

NXP
NXP
D1695

This part is a darlington connection NPN silicon epitaxial transistor. The 2SD1695 is a Darlington connection transistor and incorporates a dumper diode between the collector and emitter and a constant voltage diode and protection elements between the collector and base. This transistor is ideal for drives in solenoid and actuators.

NEC
NEC

www.DataSheet.jp    |   2018   |  メール    |   最新    |   Sitemap