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AIC1634 데이터시트 PDF




aic에서 제조한 전자 부품 AIC1634은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 AIC1634 기능
기능 1.4MHz Current-Mode Step-Up DC/DC Converter
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AIC1634 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.



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AIC1634 데이터시트, 핀배열, 회로
AIC1634
1.4MHz Current-Mode Step-Up DC/DC Converter
FEATURES
Fixed Frequency 1.4MHz Current-Mode PWM
Operation.
Adjustable Output Voltage up to 30V.
Guaranteed 12V/ 150mA Output with 5V Input.
2.6V to 10V Input Range.
Maximum 0.1µA Shutdown Current.
Programmable Soft-Start.
Tiny Inductor and Capacitors are allowed.
Space-Saving SOT-23-6 Package.
APPLICATIONS
LCD Bias
LCM
OLED Driver
DESCRIPTION
AIC1634 is a current-mode pulse-width modulation
(PWM), step-up DC/DC Converter. The built-in high
voltage N-channel MOSFET allows AIC1634 for
step-up applications with up to 30V output voltage,
as well as for Single Ended Primary Inductance
Converter (SEPIC) and other low-side switching
DC/DC converter.
The high switching frequency (1.4MHz) allows the
use of small external components. The Soft-Start
function is programmable with an external capacitor,
which sets the input current ramp rate.
The AIC1634 is available in a space-saving
SOT-23-6 package.
TYPICAL APPLICATION CIRCUIT
3.3~4.2V
CIN
4.7µF
L1
10µH
IN SW
SHDN FB
GND SS
AIC1634
D1
VOUT =12V
R1
105k
COUT
C1 10µF
39pF
Css
33nF
R2
12k
L1: SLF6025-100M1R0, TDK
D1: SS0540, PAN JIT
CIN: EDK316BJ475KD, Taiyo Yuden
COUT: TMK316C106KL, Taiyo Yuden
Fig. 1 12V LCD Bias Application for Li-Ion Battery
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1634P-02 010405
1
Free Datasheet http://www.Datasheet4U.com




AIC1634 pdf, 반도체, 판매, 대치품
AIC1634
TYPICAL PERFORMANCE CHARACTERISTICS
5.2 12.2
VIN=3.6V
12.1
VIN=3.6V
5.1
12.0
5.0
11.9
4.9
11.8
4.8
1
10 100
Output Current (mA)
Fig. 2 Load Regulation
11.7
1
10
Output Current (mA)
Fig. 3 Load Regulation
100
130
125
FB=1.3V
SHDN=1.0V
120
115
110
105 1 2 3 4 5 6 7 8 9 10 11 12
Supply Voltage (V)
Fig. 4 Non-Switching Current
90
VOUT=9V
C1=39pF
Test circuit refer to Fig.1
85
80
75
70
65 0
VIN =5V
VIN =4.2V
VIN =3.6V
VIN =3.3V
100 200
Output Current (mA)
300
Fig. 6 Efficiency vs. Output Current
90
80 VIN=4.2V
VIN =3.6V
70 VIN =3.3V
60 VIN =2V.I5NV=2.7V
50
VOUT=5V
C1=250pF
Test circuit refer to Fig.1
40
0
100 Outp2u00t Curre3n00t (mA)400
500
Fig. 5 Efficiency vs. Output Current
90
85
80
75 VIN=5V
70
65
VIN =3.3VVIN =3.6V VIN=4.2V
60
55
VOUT=12V
50 C1=39pF
45 Test circuit refer to Fig.1
40
0
50Output10C0 urrent15(0mA) 200
250
Fig. 7 Efficiency vs. Output Current
4
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AIC1634 전자부품, 판매, 대치품
AIC1634
BLOCK DIAGRAM
VIN
Control
PWM/PFM
R3 Soft Start
R4 PWM
4µA
Error Amp
Comparator
-
+
Q1
+
Control
Driver
- Logic
FB
Q2
18
RC
R1 CC
1.4MHz
Oscillator
x1
R2 Slope Compensation
x20
Current AMP x 5
+
RS
-
SS
SHDN
LX
GND
PIN DESCRIPTIONS
PIN 1: SW -
PIN 2: GND -
PIN 3: FB -
Power Switching Connection.
Connect SW to inductor and
output rectifier. Keep the
distance
between
the
components as close to SW as
possible.
Ground.
Feedback Input. Connect a
resistive voltage divider from the
output to FB to set the output
voltage.
VOUT=1.23V(
R1
R2
+ 1)
PIN 4: SHDN - Shutdown Input. Drive SHDN
low to turn off the converter. To
PIN 5: SS
PIN 6: IN
automatically start the converter,
connect SHDN to IN. Do not
leave SHDN unconnected.
SHDN draws up to 50µA.
- Soft-Start Input. Connect a
soft-start capacitor from SS to
GND in order to soft-start the
converter. Leave SS open to
disable the soft-start function.
- Internal Bias Voltage Input.
Connect IN to the input voltage
source. Bypass IN to GND with
a capacitor sitting as close to IN
as possible.
7
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