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PDF AIC1634 Data sheet ( Hoja de datos )
| Número de pieza | AIC1634 | |
| Descripción | 1.4MHz Current-Mode Step-Up DC/DC Converter | |
| Fabricantes | aic | |
| Logotipo |  |
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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
1 page  
AIC1634
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
90
85
80
75
70
65
60
55
50
45
0
VIN =5V
VIN =4.2V
VIN =3.6V
VIN =3.3V
VOUT=15V
C1=39pF
Test circuit refer to Fig.1
Ou5t0put Current (1m00A)
150
Fig. 8 Efficiency vs. Output Current
90
80
70
VIN=5V
60
50
40 VOUT=25V
C1=47pF
30 Test circuit refer to Fig.1
20
0
20 Output C40urrent (m60A)
80
Fig. 9 Efficiency vs. Output Current
1.50
1.45
VIN=3.6V
1.40
1.35
1.30
1.25
1.20 -40
Fig. 10
-20 0
20 40 60 80 100
Temperature (°C)
Switching Frequency vs. Temperature
1.25
1.24
1.23
1.22
1.21
1.20
-50
VIN=3.6V
-25 0
25 50
Temperature (°C)
75
Fig. 11 Feedback Pin Voltage
100
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
2 3 4 5 6 7 8 9 10 11
Supply Voltage (V)
Fig. 12 RDS-ON vs. Supply Voltage
VSHDN
VOUT
IINDUCTOR
VIN=3.6V, VOUT=12V,
IOUT=100mA, CSS=0nF
Fig. 13 Start-Up from Shutdown
5
Free Datasheet http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC1634.PDF ] | |
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