ame5130 AME, Inc., ame5130 Datasheet

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ame5130

Manufacturer Part Number
ame5130
Description
Micropower Step-up Dc/dc Converter
Manufacturer
AME, Inc.
Datasheet

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Part Number:
ame5130AEEVADJ
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AME
Quantity:
20 000
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ame5130AEEVADJZ
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AME
Quantity:
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ame5130AEEVADJZ
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Quantity:
20 000
n General Description
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.
Ion battery DC 2V to 5.5V; can be turned on by putting
more than 1V at pin 4(EN). 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 EN pin.
n Features
n Applications
AME5130
The AME5130 is a fixed off-time step-up DC/DC con-
AME5130 can drive up 8 white LEDs from a single Li-
l 0.7
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 0.01 A shutdown current
l Small 5-Lead SOT-25 package
l All AME’ s Lead Free Product Meet RoHS
l White LED Back-Lighting
l Hand-held Devices
l Digital Cameras
l Portable Applications
l
Standard
LCD Bias Power
AME, Inc.
internal switch
Ceramic
4.7 F
C
Ceramic
n Typical Application
* I
Figure 1
Figure 2
IN
4.7 F
2.5V-4.2V
C
LED
IN
2.5V-4.2V
V
=V
IN
V
IN
FB
0V
>1.1V
/R2
Battery
Six White LEDs Application in Li-lon
Typical 20V Application
4
4
EN
5
5
EN
V
V
AME5130
IN
IN
AME5130
10 H
GND
Micropower Step-Up
15 H
L
GND
2
L
2
SW
DC/DC Converter
1
1
SW
FB
FB
D
3
3
D
Option for
80
6LEDs
R2
13K
200K
R2
R1
I
LED
20mA
20V
Ceramic
Ceramic
4.7 F
4.7 F
C
C
OUT
OUT
1

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ame5130 Summary of contents

Page 1

... PDAS,and other hand-held devices. The low 400ns off-time allows the use of tiny external compo- nents. AME5130 can drive up 8 white LEDs from a single Li- Ion battery 5.5V; can be turned on by putting more than 1V at pin 4(EN). 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 EN pin ...

Page 2

... AME, Inc. AME5130 n Function Block Diagram OUT Vref=1. Adjust Under Voltage 2 L Enable Comp + CL Comp - 400ns one Shot Logic control Lockout EN : Figure 3 AME5130 Block Diagram Micropower Step-Up DC/DC Converter Current sensing Driver GND OUT C OUT ...

Page 3

... Pin Number Pin Name GND AME5130 GND Die Attach: Conductive Epoxy Pin Description Power Switch input. This is the drain of the internal NMOS power switch. Minimize the metal trace area connected to this pin to minimize EMI. ...

Page 4

... AME, Inc. AME5130 n Ordering Information AME5130 xxx x Pin Operating Ambient Configuration Temperature Range - +85 2. GND (TSOT-25 Ordering Information Part Number Marking* AME5130AEEVADJZ BCLww Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension. ...

Page 5

... AME, Inc. AME5130 n Absolute Maximum Ratings Parameter Input Supply Voltage RUN, V Voltages FB SW Voltage N-Channel Switch Sink Current ESD Classification Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device * HBM B: 2000V~3999V and SW pin pass 1500V only ...

Page 6

... AME, Inc. AME5130 n Electrical Specifications o V =2.2V Unless otherwise noted. IN IN, A Parameter Input Voltage Quiescent Current Shutdown Current Feedback Trip Point Feedback Hysteresis Hysteresis Switch Current Limit FB Pin Bias Current Switch R DSON Switch Off Time EN Input Current Switch Leakage Current ...

Page 7

... FB pin drops slightly below 1.23V, the enable com- parator enables the device and begins the cycle de- scribed previously. The EN pin can be used to turn off the AME5130 and reduce the shutdown mode the output voltage will be a diode drop lower than the input voltage. ...

Page 8

... For some applications a reduction in output voltage ripple can be achieved by increasing the output ca- pacitor. Local bypassing for the input is needed on the AME5130. Multilayer ceramic capacitors are a good choice for this as well. A 4.7 F capacitor is sufficient for most appli- cations. For additional bypassing, a 100nF ceramic capaci- tor can be used to shunt high frequency ripple on the input ...

Page 9

... Ceramic L Option for 8LEDs OUT 1 F Ceramic AME5130 GND 2 100K AME5130 GND 32.4K 2 Figure5: Li-Ion 5V Application Micropower Step-Up DC/DC Converter C OUT 1 F Ceramic 120mA 5pF C OUT 4.7 F Ceramic 9 ...

Page 10

... 4.7 F Ceramic 10 L 12V 40mA 100K AME5130 FB Ceramic GND 11.3K 2 Figure6: Li-Ion 12V Application L 12V 145mA 100K AME5130 FB Ceramic GND 11.3K 2 Figure7 12V Application Micropower Step-Up DC/DC Converter C OUT 4 OUT 4.7 F ...

Page 11

... AME, Inc. AME5130 Switch Current Limit vs. V 800 750 700 650 600 550 500 450 400 350 2 2.5 3 3.5 4 Vin(V) Efficiency vs. Load Current =2. 0 (mA) OUT Enable Current vs. V (Part Switching) ...

Page 12

... AME, Inc. AME5130 EN Threshold vs. V 1.05 1.0 0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 2 2 Efficiency vs 2.5 3 3.5 Vin (V) FB Trip Point and FB Pin Current vs Temperature 1.25 1.24 1.23 1.22 1.21 1. -40 -20 Ambient Tempature ( 4 LEDs = 15mA OUT 4 4.5 5 0.36 0.35 V 0.34 0.33 0.32 A 0.31 0.30 0.29 55 ...

Page 13

... AME, Inc. AME5130 Typical Switching Waveform ; 19.4V 4.2V OUT 15mA OUT 20V / div Inductor current, 500mA / div 100mV / div, AC OUT Start-Up/Shutdown 20V 2.5V OUT IN 1) Vout, 100mV/div.AC 2) Vsw,20V/div,DC 3) Inductor Current 500mA/div,DC T=20 s/div LEDs ...

Page 14

... AME, Inc. AME5130 n Date Code Rule Marking Date Code Tape and Reel Dimension SOT-25 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size ...

Page 15

... AME, Inc. AME5130 n Package Dimension SOT-25 Top View Front View b Side View SYMBOLS θ Micropower Step-Up DC/DC Converter MILLIMETERS INCHES MIN MAX MIN MAX 1.20REF 0.0472REF 0.00 0.15 0.0000 0.0059 0.30 0.55 0.0118 0.0217 2.70 3.10 0.1063 0.1220 1.40 1.80 0.0551 0.0709 1.90 BSC ...

Page 16

... These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ...

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