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부품번호 | AAT3113ISN-20-T1 기능 |
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기능 | High Efficiency 1.5X Fractional Charge Pumps For White LED Applications | ||
제조업체 | Advanced Analogic Technologies | ||
로고 | |||
AAT3113, AAT3114/14A
High Efficiency 1.5X Fractional Charge
Pumps For White LED Applications
General Description
Features
ChargePump™
The AAT3113 and AAT3114/14A are low noise, con-
• AAT3113: Four Outputs
stant frequency charge pump DC/DC converters
• AAT3114/14A: Six Outputs
that use fractional (1.5X) conversion to increase effi-
• 20mA Full-Scale Current
ciency in white LED applications. The devices can
• Simple Serial Control (S2Cwire) Interface
be used to produce current levels up to 20mA for
— 32-Position Logarithmic Scale with Digital
each output from a 2.7V to 5.5V input. A low exter-
Control
nal parts count (two 1µF flying capacitors and two
• Low Noise Constant Frequency Operation
small bypass capacitors at VIN and OUT) makes
these devices ideally suited for small, battery-pow-
• 33% Less Input Current Than Doubler
Charge Pump
ered applications.
• High Accuracy Brightness Matching
AnalogicTech’s Simple Serial Control™ (S2Cwire™)
interface is used to enable, disable, and set the
LED drive current for 32-level logarithmic scale LED
brightness control. AAT3113 and AAT3114/14A
devices have a thermal management system for
protection in the event of a short-circuit condition on
any of the output pins. Built-in soft-start circuitry
prevents excessive inrush current during start-up.
A high switching frequency enables the use of small
external capacitors. A low-current shutdown feature
• Small Application Circuit
• Regulated Output Current
• Automatic Soft Start
• VIN Range: 2.7V to 5.5V
• No Inductors
• 600kHz Switching Frequency
• IQ <1µA in Shutdown
• Temperature Range: -40°C to 85°C
• 12-Pin TSOPJW Package (AAT3113)
• 16-Pin QFN Package (AAT3114/14A)
disconnects the load from VIN and reduces quies-
cent current to less than 1µA. The AAT3113 pro-www.DataSheet4U.com
vides four LED current source outputs, and the
AAT3114/14A provides six. The AAT3113 is avail-
Applications
able in a Pb-free 12-pin TSOPJW package, and the
AAT3114/14A is available in a Pb-free 16-pin QFN
package.
• Programmable Current Source
• White LED Backlighting
Typical Application
VBATTERY
CIN COUT
1μF 1μF
EN/SET
VIN C1+
OUT
C1-
C2+
AAT3114/14A
C2-
EN/SET
GND
D1
D2
D3
D4
D5
D6
C1
1μF
C2
1μF
D6 D5 D4 D3 D2 D1
3113.2006.07.1.9
1
AAT3113, AAT3114/14A
High Efficiency 1.5X Fractional Charge
Pumps For White LED Applications
Electrical Characteristics
VIN = 3.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Conditions
Min Typ Max Units
Input Power Supply
VIN
ICC
ISHDN
IDX
ΔID/ΔVIN
Operation Range
Operating Current
Shutdown Current
Output Current
Output Current Line
Regulation
2.7 5.5
Active, No Load Current
12
EN = 0
1
AAT3113: 3.0V ≤ VIN ≤ 5.5V
TA = 25°C, All
AAT3114/14A: 3.2V ≤ VIN ≤ 5.5V Outputs Max Current
18
20
22
3.0V ≤ VIN ≤ 5.5V
-2 2
Current Matching
I(D-Match) Between Any
Two Outputs
VD1:Dn = 3.6V, VIN = 3.3V
0.3
η Efficiency
Charge Pump
VIN = 3.5V, IOUT(total) = 40mA
93
tSS
FCLK
EN/SET
Soft-Start Time
Clock Frequency
400
300 600 900
VEN(L)
VEN(H)
tLO
tHI
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET
High Time
VIN = 2.7V to 5.5V
VIN = 2.7V to 5.5V
0.5
1.4
0.3 75
50
tOFF
Input
Current
EN/SET Off Timeout
EN/SET Input Leakage VIN = 5.5V
300 500
-1 1
V
mA
µA
mA
%/V
%
%
µs
kHz
V
V
µs
ns
µs
µA
4 3113.2006.07.1.9
4페이지 AAT3113, AAT3114/14A
High Efficiency 1.5X Fractional Charge
Pumps For White LED Applications
Typical Characteristics
VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF; TA = 25°C, unless otherwise noted.
Turn-On
ENSET
(2V/div)
OUT
(5V/div)
VDIODE
(2V/div)
IIN
(50mA/div)
Time (100µs/div)
ENSET
(2V/div)
OUT
(5V/div)
VDIODE
(5V/div)
IIN
(50mA/div)
Turn-Off
Time (200µs/div)
IN
OUT
VDIODE
40mA Load Characteristics
Time (1µs/div)
60mA Load Characteristics
IN
OUT
VDIODE
Time (1µs/div)
IN
OUT
VDIODE
80mA Load Characteristics
Time (1µs/div)
IN
OUT
VDIODE
120mA Load Characteristics
Time (1µs/div)
3113.2006.07.1.9
7
7페이지 | |||
구 성 | 총 15 페이지수 | ||
다운로드 | [ AAT3113ISN-20-T1.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
AAT3113ISN-20-T1 | High Efficiency 1.5X Fractional Charge Pumps For White LED Applications | Advanced Analogic Technologies |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |