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PDF AME5130 Data sheet ( Hoja de datos )
| Número de pieza | AME5130 | |
| Descripción | Micropower Step-Up DC/DC Converter | |
| Fabricantes | Analog Microelectronics | |
| Logotipo |  |
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AME, Inc.
AME5130
Micropower Step-Up DC/DC Converter
n General Description
n Typical Application
The AME5130 is a fixed off-time step-up DC/DC con-
verter in a small 5-lead SOT-25 package.The AME5130
is ideal for LCD panels requiring low current and high effi-
ciency as well as LED applications for cellular phone back-
lighting, PDAS,and other hand-held devices. The low
400ns off-time allows the use of tiny external compo-
nents.
V IN
2.5V-4.2V
CIN
4.7µF
Ceramic
L
10µH
D
5
V IN
1
SW
AME5130
Option for
6LEDs
ILED
COUT
4.7µ F
Ceramic
AME5130 can drive up 8 white LEDs from a single Li-
Ion battery DC 2V to 5.5V; can be turned on by putting
more than 1V at pin 4(RUN). To control LED brightness,
the LED current can be pulsed by applying a PWM (pulse
width modulated) signal with a frequency range of 100Hz
to 50KHz to the RUN pin.
>1.1V 4
RUN
GND
0V
2
3
FB
R2
80Ω
* ILED=VFB/R2
n Features
l 0.7Ω internal switch
l Uses small surface mount components
l Adjustable output voltage up to 20V
l 2V to 5.5V input range
l Input undervoltage lockout
l 0.01µA shutdown current
l Small 5-Lead SOT-25 package
Figure 1 Six White LEDs Application in Li-lon
Battery
V IN
2.5V-4.2V
L
15µ H
D
CIN
4.7µF
Ceramic
5
VIN
1
SW
AME5130 FB 3
4
RUN
GND
2
20V
20mA
R1
510K
R2
33K
COUT
4.7µ F
Ceramic
n Applications
l White LED Back-Lighting
l Hand-held Devices
l Digital Cameras
l Portable Applications
l LCD Bias Power
Figure 2 Typical 20V Application
1
1 page  
AME, Inc.
AME5130
Micropower Step-Up DC/DC Converter
n Absolute Maximum Ratings
Parameter
Symbol
Maximum
Unit
Input Supply Voltage
RUN, VFB Voltages
SW Voltage
N-Channel Switch Sink Current
ESD Classification
VIN
VRUN,VFB
VSW
ISW
6
VIN
VOUT+0.3
800
B
V
V
V
mA
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
-40 to +85
-40 to +125
Unit
oC
oC
n Thermal Information
Parameter
Package Die Attached Symbol
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
SOT-25
Internal Power Dissipation
(∆T = 100oC)
Maximum Junction Temperature
Conductive
θJC
θJA
PD
Lead Temperature (Soldering 10sec)
* The case point of θJC is on the center of Molding Compound.
Maximum
81
260
400
150
300
Unit
oC / W
mW
oC
oC
5
5 Page 
AME, Inc.
AME5130
800
750
700
650
600
550
500
450
400
350
2
Switch Current Limit vs. VIN
TA=25OC
2.5 3
3.5 4 4.5
VIN(V)
5
5.5 6
Efficiency vs. Load Current
90
85 VIN=5V
80
75
V IN=2.5V
V IN=4.2V
VIN=3.3V
70
65
60
55
50
45
40
0.5
4
VOUT =12V
8 20 40 55 70 80 110 115 140 145
IOUT (mA)
Enable Current vs. VIN (Part Switching)
140
130
120 TA=25oC
110
100
90
80
70 TA=-40oC
TA=85 oC
60
50
40
2 2.5 3 3.5 4 4.5 5 5.5 6
VIN (V)
Micropower Step-Up DC/DC Converter
Efficiency vs. Load Current
90
85 VIN=4.2V
80 VIN=3.3V
VIN=2.5V
75
70
65
60
55
50
0.5
5
VOUT=20V
10 15 20 25 30 35 40
IOUT (mA)
45
Efficiency vs. Load Current
95
90 VIN=4.2V
85
80 VIN=3.3V
75
70 VIN=2.5V
65
60
55
50
45 VOUT=5V
40
0.5 3
6 9 20 35 50 80 110 140 160 190 220 250
IOUT (mA)
Disable Current vs. VIN (Part Not Switching)
140
130
TA=25o C
120
110
100
90 TA=85 oC
80
70 TA=-40oC
60
50
40
2 2.5 3 3.5 4 4.5 5 5.5 6
VIN (V)
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AME5130.PDF ] | |
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