PCN20070608

Product Change Notices
PCN No.: 20070608
Date: 06/25/2007
This is to inform you that AME5136 datasheet will be changed from Rev. B. 01 to
Rev. C. 01 . This notification is for your information and concurrence.
If you require data or samples to qualify this change, please contact AME, Inc.
within 30 days of receipt of this notification.
If we do not receive any response from you within 30 calendar days from the
date of this notification, we will consider that you have accepted this PCN.
If you have any questions concerning this change, please contact:
PCN Originator:
Name: Alan Chang
Email: [email protected]
Expected 1st Device Shipment Date: 04/25/2007
Earliest Year/Work Week of Changed Product: 0712
Description of Change:
1. Add OCP to Features on Page 1.
2. Change Cout1 in Typical Application from 1uF to 4.7uF on Page 1 .
3. On Electrical Specifications on Page 7.
Was
VFB1
OTP
Is
Min
Typ
Max
Min
Typ
Max
0.2
0.21
0.23
0.19
0.20
0.21
160
150
Unit
V
℃
4. Revise following plots from page 9 to page 13.
4.1 Feedback Voltage vs. VIN (with VFB=0.21V). Total is 4 plots.
4.2 Sub Display Efficiency when VSUB=12V and 20V (with inductor=22uH ). Total
is 2 plots.
QPM018A-A
AME, Inc.
AME5136
n General Description
The AME5136 is a dual Boost DC/DC converter, designed to drive up to 4 white LEDs with a constant current and to power an organic LED display with a constant
voltage. According to SEL pin status, the AME5136 can
either regulates output current flowing through series connected LEDs or regulate output voltage applying to OLED.
A single external resistor is used to set the maximum
LED current. The LED current can be adjusted by applying a PWM signal to the EN pin. Pulling the EN pin to
GND disables the chip and reduces the supply current to
less than 1µA. Additional features include a low-side
NFET switch that can turn off the LED string with no DC
current path to ground. Other features include OVP, OCP,
UVP and OTP.
Integrated White LED Driver With
Organic LED Display Power Supply
n Typical Application
VIN
2.7V to 5.5V
L 10µH
CIN
4.7µF
IN
COUT1
4.7µF
OVP
ILED1
0.2
RFB1
ILED1=
CH1
FB1
EN
RFB1
AME5136
VSUB
16V
CH2
RSUB1
Main>1.5V
VSUB<0.4V
FB2
SEL
RSUB2
GND
n Features


R
VSUB = 1 + SUB1  ×1.23
 RSUB 2 
l Integrated OLED and White-LED Driver
l Adjustable Output Voltage up to 20V
Main Display
SW
The AME5136 is available in a small DFN-10(
3mmx3mmx0.85mm) package.
l Wide Input Voltage Range: 2.7V to 5.5V
D
Figure 1. Main LEDs Display and OLED SUB Display
l Complete Protection: OVP, OTP, UVP, OCP
l PWM Dimming Control
l Small External Components
l Cycle-By-Cycle Current Limit
VIN
2.7V to 5.5V
L 10µH
CIN
4.7µF
D
Main Display
COUT1
4.7µF
SW
l All AME's Lead Free Products Meet RoHS
IN
Standards
OVP
ILED1
>1.5V
n Applications
0V
Dimming
Control
200Hz to 20KHz
CH1
FB1
EN
AME5136
CH2
l White LED Back-Lighting
l Hand-held Devices
l Digital Cameras
RFB1
VSUB
16V
FB2
SEL
RSUB2
l Flip-phones / Clam-shell Cellular Phones
l High-fashion cellular phones
0.2
RFB1
RSUB1
Main>1.5V
VSUB <0.4V
ILED1=
GND
Figure 2. PWM Dimming Control Using the EN Pin
Rev.C.01
1
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Typical Application
VIN
2.7V to 5.5V
L 10µH
CIN
4.7µF
D
Main Display
COUT1
4.7µF
SW
IN
OVP
ILED1
0.2
ILED1=
RFB1
CH1
>1.5V
FB1
0V
EN
Dimming
AME5136
Control
RFB1
200Hz to 20KHz
VSUB
CH2
Main>1.5V
VSUB<0.4V
ILED2
SEL
FB2
ILED2=
RSUB2
1.23
RSUB2
GND
Figure 3. 2LEDs for Main Panel and 4 LEDs for SUB Panel
VIN
2.7V to 5.5V
L 10µH
CIN
4.7µF
D
COUT1
4.7 µF
SW
IN
OVP
ILED1
CH1
>1.5V
0V
Dimming
Control
200Hz to 20KHz
FB1
EN
ILED1=
RFB1
AME5136
VSUB
CH2
Main>1.5V
VSUB<0.4V
0.2
RFB1
ILED2
SEL
FB2
ILED2=
RSUB2
1.23
RSUB2
GND
Figure 4. 3LEDs for Main Panel and 5 LEDs for SUB Panel
2
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Function Block Diagram
L
1
VIN
D
SW
Main Display
OVP
10
9
C1
OVP
COMP
XEnable
Vref
UVP
COMP
Enable
UVP
REF
2
OTP
OVP
REF
CL
COMP
CL
Adjust
5
Current
Sensing
400ns
one shut
N2
CH1
FB1
EN
CIN
Logic
3
SEL
4
Driver
RFB1
N1
Select
Logic
P1
ref1
Driver
CH2
8
ref2
Cf
FB2
7
6
Organic
LED
GND
Figure 5. AME5136 Function Block Diagram
Rev.C.01
3
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Pin Configuration
DFN-10
(3mmx3mmx0.85mm)
Top View
AME5136AEVB
10
9
8
7
6
1. IN
2. EN
3. SEL
4. FB1
AME5136
5. CH1
6. GND
1
2
3
4
5
7. FB2
8. CH2
9. OVP
10. SW
* Die Attach:
Conductive Epoxy
Note : The area enclosed by dashed line represents Exposed Pad and connect to GND.
n Pin Description
4
Pin Number
Pin Name
Pin Description
1
IN
Input Voltage.
2
EN
Shutdown control input, active low.
The shutdown pin is an active low control. Tie this pin above 1.5V to enable
the device. Tie this pin below 0.4V to turn off the device.
3
SEL
Selection Pin. Internal MOSFET selection. Pull low to turn on the internal
CH1. Pull high to turn on CH2.
4
FB1
Main Display Feedback.
5
CH1
Main Display Return Voltage
6
GND
Ground.
7
FB2
SUB Display Feedback.
8
CH2
SUB Display Power Supply Voltage.
9
OVP
Over Voltage Protection.
10
SW
This is the switch pin and is connected to the drain of the internal NMOS
power switch N1.

R
VSUB = 1 + SUB1
 RSUB 2

 × 1.23


Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Ordering Information
AME5136 x x x x xxx x- x
Special Feature2
Special Feature1
Output Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A
(DFN-10 )
1. IN
2. EN
3. SEL
4. FB1
5. CH1
6. GND
7. FB2
8. CH2
9. OVP
10. SW
Operating Ambient
Temperature Range
Package
Type
Number
of
Pins
Output Voltage
E: -40OC to 85OC
V: DFN
B: 10
ADJ: Adjustable
Special
Feature1
Special Feature2
(For DFN package only)
Z: Lead free 3: 3x3x0.85(mm) (LxW xH)
n Ordering Information
Part Number
Marking*
Output
Voltage
Package
Operating Ambient
Temperature Range
AME5136AEVBADJZ-3
BDZ
yyww
ADJ
DFN-10
(3mmx3mmx0.85mm)
-40oC to 85oC
Note: yyww represents the date code.
* A line on top of the first letter represents lead free plating such as BDZ.
Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
Rev.C.01
5
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Absolute Maximum Ratings
Parameter
Input Supply Voltage
EN, FB Voltages
SW Voltage
Symbol
Maximum
V IN
6
VEN ,VFB
VIN
VSW
30
Unit
V
A*
ESD Classification
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
* HBM A: 0V ~ 1999V
n Recommended Operating Conditions
Parameter
Symbol
Rating
Unit
Input Supply Voltage
V IN
2.7 to 5.5
V
Ambient Temperature Range
TA
-40 to 85
Junction Temperature Range
TJ
-40 to 125
Storage Temperature Range
TSTG
-65 to 150
o
C
n Thermal Information
Parameter
Package
Die Attach Symbol
Thermal Resistance *
(Junction to Case)
θJC
Maximum
Unit
17
o
C/W
Thermal Resistance
(Junction to Ambient)
DFN-10
(3mmx3mmx0.85mm)
Conductive
Epoxy
Internal Power Dissipation
θJA
125
PD
800
mW
Maximum Junction Temperature
150
o
C
Solder Iron (10 Sec)**
350
o
C
* Measure θJC on backside center of molding compund if IC has no tab.
** MIL-STD-202G 210F
6
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Electrical Specifications
VIN=3.6V, EN = VIN, TA= 25oC unless otherwise noted.
Parameter
Input Voltage Range
Main Display Quiescent Current
SUB Display Quiescent Current
Shutdown Current
FB1 Feedback Voltage
FB2 Feedback Voltage
Switch Current Limit
Symbol
VIN
Test Condition
o
TA = -40 C to 85 C
TA = 25 C
FB = 0.1V
(Switching)
TA = 25oC
VFB1
VFB2
ICL
150
TA = -40 to 85 C
150
TA = 25oC
150
o
TA = -40 to 85 C
150
TA = -40 to 85oC
RDSON
0.05
2
0.19
0.2
0.21
TA = -40 to 85 C
1.2
1.23
1.26
TA = 25oC
300
350
400
o
TA = -40 to 85 C
o
TA = -40 to 85 C
280
o
TA = -40 to 85 C
NMOS Switch RDSON , N2
Switch off time
Input Under Voltage Lockout
t OFF
UVP
0.6
1.6
8
10
6
8
400
1.7
2
2.3
o
21
22
23
TA = -40 to 85 C
OVP
Over Temperature Protection
OTP
150
Over Temperature Hysteresis
OTH
20
Main Switch Leakage N1
ISW
V SW = 5V
NMOS Switch Leakage N2
EN Input Threshold (Low)
(Shutdown)
EN Input Threshold (High)
(Enable the device)
Sel Low Level Voltage
Enable SUB Display
Disable Main Display
Sel High Level Voltage
Enable Main Display
Disable SUB Display
Rev.C.01
EN
Threshold
µA
V
mA
Ω
ns
o
TA = -40 to 85 C
µA
400
Output Over Voltage Protection
PMOS Switch Leakage P1
250
400
EN = 0V
o
µA
200
300
Main_Switch RDSON, N1
PMOS Switch RDSON , P1
250
400
o
FB = 1.15V
(Switching)
V
200
300
TA = -40 to 85oC
TA = 25 C
Max Units
5.5
o
FB = 1.3V
(Not Switch)
IQ(SUB)
Typ
2.7
o
FB = 0.3V
(Not Switch)
IQ(Main)
ISD
Min
o
V
o
C
0.1
2
0.5
1
0.5
1
µA
0.4
o
TA = -40 to 85 C
V
1.5
0.3
SEL
Threshold
TA = -40 to 85oC
V
1.5
7
AME, Inc.
AME5136
n Detailed Description
The AME5136 is designed for white LED & OLED backlighting in mobile phone applications. It has a main display loop which can drive up to 4 white LEDS in series
and a SUB display loop which is designed to drive OLED
up to 20V/10mA or 5 white LEDs.
The AME5136 operates at a wide input voltage range
suitable for Li-ion battery and has a constant off time for
smaller inductor and capacitors. The block diagram refers the operation circuit. By SEL pin, it can choose the
different channel to turn on CH1 or CH2.
Current Limit Protection
The AME5136 has current limiting protection to prevent excessive stress on itself and external components
during overload conditions. The internal current limit comparator will disable the NMOS power device at a typical
switch peak current limit of 350mA.
Output Over-Voltage Protection
The AME5136 contains dedicated circuitry for monitoring the output voltage. In the event that the primary LED
network is disconnected the output will increase and be
limited to 22V(typ.). There is a ~1V hysteresis associated with this circuitry, which will turn the NMOS off when
the output voltage is at 23V(max.) until the output voltage reach 21V(typ.) or lower. The 22V limit allows the
use of 25V, 4.7µF ceramic output capacitors creating an
overall small solution for white LED applications.
Integrated White LED Driver With
Organic LED Display Power Supply
n Application Information
Inductor Selection
The recommended value of inductor for AME5136 applications is 10µH. Small size and better efficiency are
the major concerns for portable device, such as AME5136
used for dual panel mobile phone. The inductor should
have low DCR for better efficiency. To avoid inductor saturation, current rating should be at least 600mA. The in
put range is 2.7V to 5.5V.
Capacitor Selection
4.7µF input capacitor can reduce input ripple. For better voltage stability, to increase the input capacitor value
or using LC filter is feasible, especially in the Li-ion battery application. 4.7µF output capacitor is sufficient to
reduce output voltage ripple. For better voltage filtering,
ceramic capacitors with low ESR are recommended. X5R
and X7R types are suitable because of their wider voltage
and temperature ranges.
Diode Selection
Schottky diode is a good choice for AME5136 because
of its lower forward voltage drop and faster reverse recovery. Using schottky diode can get better efficiency. The
high speed rectification is also a good characteristic of
schottky diode for high switching frequency. Current rating of the diode must meet the root mean square of the
peak current and output average current multiplication.
Under Voltage Protection
The AME5136 has an UVP comparator to turn the NMOS
power device off in case the input voltage or battery voltage is too low preventing an on state of the power device
conducting large amounts of current.
8
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
Feedback Voltage vs. VIN (4LEDs)
Feedback Voltage vs. VIN (4LEDs)
0.27
0.27
COUT= 1µF
COUT= 4.7µF
0.25
0.23
VFB (V)
VFB (V)
0.25
0.23
1mA
10mA
0.21
0.21
1mA
0.19
20mA
0.17
2.7
3
0.19
20mA
10mA
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
0.17
2.7
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
VIN (V)
VIN (V)
Feedback Voltage vs. VIN (3LEDs)
Feedback Voltage vs. VIN (3LEDs)
0.27
0.27
COUT= 1µF
COUT= 4.7µF
0.25
0.25
0.23
20mA
10mA
0.21
VFB (V)
VFB (V)
1mA
0.23
10mA
0.21
1mA
30mA
0.19
0.17
2.7
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
0.17
2.7
30mA
20mA
0.19
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
VIN (V)
VIN (V)
Main Display Efficiency ( 4LEDs )
Main Display Efficiency ( 4LEDs )
90
90
Inductor=10µH
Inductor=22µH
VIN=4.2V
85
85
80
VIN=3.6V
75
VIN =3V
70
80
VIN=3V
75
VIN=4.2V
70
65
65
60
1
4
7
10
13
Load Current ( mA )
Rev.C.01
Efficiency (%)
VIN=3.6V
16
19
60
1
4
7
10
13
16
19
Load Current ( mA )
9
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
Main Display Efficiency ( 3LEDs )
Main Display Efficiency ( 3LEDs )
90
85
Inductor=22µH
Inductor=10µH
VIN =3V
80
VIN=3.6V
75
VIN=4.2V
70
80
Efficiency (%)
Efficiency (%)
85
60
70
60
1
4
7
10
13
16
19
VIN=3.6V
1
7
4
10
13
16
19
Load Current (mA)
Load Current ( mA )
Sub Display Efficiency( VSUB=12V)
Sub Display Efficiency (VSUB=12V)
85
90
VIN=3.6V
VIN =4.2V
85
80
75
80
VIN=3.3V
Efficiency(%)
Efficiency (%)
VIN=4.2V
65
65
VIN=2.5V
70
65
60
VIN=5.0V
75
VIN=5.5V
VIN=3.6V
VIN=3.3V
VIN=2.7V
70
VIN=4.2V
65
60
55
55
Inductor=10µH
50
50
1
4
7
10
13
16
19
Inductor=22µH
1
4
7
10
13
16
19
Load Current (mA )
Load Current (mA)
Sub Display Efficiency( VSUB=20V)
Sub Display Efficiency( V SUB=20V )
90
85
VIN=5.0V
VIN=5.5V
85
VIN=4.2V
80
V IN=3.3V
VIN=3.3V
VIN=3.6V
75
Efficiency (%)
80
Efficiency (%)
VIN=3V
75
VIN=2.7V
VIN=4.2V
70
65
75
V IN=3.6V
70
V IN=2.5V
65
60
60
55
55
Inductor=22µH
Inductor=10µH
50
50
1
4
7
10
13
Load Current (mA)
10
16
19
1
4
7
10
13
16
19
Load Current (mA )
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
Main Enable Current vs. VIN
(Part Switching)
Sub Enable Current vs. VIN
(Part Switching)
300
300
TA=85 oC
o
TA=85 C
Enable Current (µA)
Enable Current (µA)
250
200
TA
=-40oC
150
100
TA
=25 oC
250
200
TA=-40 oC
150
100
TA=25 oC
50
50
0
2.5
3
3.5
4
4.5
5
0
2.5
5.5
3
3.5
4
4.5
Main Disable Current vs. VIN
(Part not Switching)
Sub Disable Current vs. VIN
(Part not Switching)
300
TA=85 oC
250
Disable Current (µA )
Disable Current (µA)
T A=85oC
200
TA=-40 oC
150
100
0
2.5
T A=25oC
250
200
TA=-40 oC
150
100
T A=25oC
50
3
3.5
4
4.5
5
0
2.5
5.5
3
3.5
4.5
1.50
2.2
1.40
Input Voltage (V)
TA=85oC
1.20
1.10
TA=25oC
1.00
0.90
0.80
TA=-40oC
0.70
Main Display 4LEDs
ILED=20mA
VOUT=12V
2.1
2.0
Rising
1.9
1.8
Falling
0.60
3
3.5
4
VIN (V)
Rev.C.01
5.5
2.3
1.60
0.50
2.5
5
Input Under Voltage Lockout vs. Temp.
Switch RDSON vs. VIN
RDSON (Ω)
4
VIN (V)
VIN ( V )
1.30
5.5
VIN (V)
300
50
5
VIN (V)
4.5
5
5.5
1.7
-40
-20
0
20
40
60
80 85
Temperature (oC)
11
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
Typical Switching Waveform
1
Typical Switching Waveform
1
2
2
3
3
VOUT=12V, VIN=3.6V; 4LEDs
IOUT=20mA (RFB1=10Ω)
1) VSW= 10V/div,DC
2) VOUT , 100mV / div,AC
3) Inductor Current, 200mA / div,DC
T= 10µS / div
Inductor=10µH, C OUT=4.7µF
VOUT =12V, VIN=2.7V; 4LEDs
IOUT=10mA (RFB1=20 Ω)
1) VSW= 20V/div,DC
2) VOUT , 100mV / div,AC
3) Inductor Current, 200mA / div,DC
T= 10µS / div
Inductor=10µH, C OUT=4.7µF
Start-Up/Shutdown
Step Response
1
1
2
2
3
3
VOUT= 12V , VIN=3.6V
1) Load 2mA to 15mA to 2mA ,DC.
2) VOUT , 100mV / div,AC
3) Inductor Current 200mA / div,DC
T= 20µS /div
12
VOUT=12V , VIN=2.7V
1) EN , 1V/ div.DC
2) VOUT , 10/div,DC
3) Inductor Current 100mA/div,DC
Load = 4LEDs, T=2ms/div
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
FB Trip Point vs Temperature
SUB Display
Output Over Voltage Protection vs. Temp.
23.0
1.259
Output Over Voltage (V)
Feedback Trip Point (V)
22.8
1.249
1.239
1.229
VIN=4.2V
1.219
1.209
1.199
-40
VIN=3.6V
-20
22.6
22.4
22.2
22.0
21.8
21.6
21.4
VIN=3.6V
21.2
0
20
40
o
80 85
60
21.0
-40
-20
0
20
40
60
80
85
Temperature (oC)
Temperature ( C)
EN Threshold vs. VIN
1.5
1.4
EN Threshold (V)
1.3
1.2
TA=-40o C
1.1
1.0
0.9
TA=85 oC
0.8
0.7
T A=25oC
0.6
0.5
0.4
2.5
3
3.5
4
4.5
5
5.5
VIN (V)
Rev.C.01
13
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Tape and Reel Dimension
DFN-10
(3mmx3mmx0.85mm)
P
PIN 1
W
AME
AME
Carrier Tape, Number of Components Per Reel and Reel Size
14
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
DFN-10
(3x3x0.85mm)
8.0±0.1 mm
4.0±0.1 mm
3000pcs
330±1 mm
Rev.C.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Package Dimension
DFN-10
(3mmx3mmx0.85mm)
D
SYMBOLS
MILLIMETERS
MIN
D2
L
0.035
2.900
3.100
0.114
0.122
E
2.900
3.100
0.114
0.122
e
H
MAX
D
F
TOP VIEW
MIN
0.900
A
E
MAX
INCHES
0.450 TYP.
0.450
0.550
0.017 TYP.
0.018
0.022
D2
1.600 TYP.
0.063 TYP.
E2
2.400 TYP.
0.094 TYP.
b
0.150
0.250
0.0059
0.010
L
0.350
0.450
0.014
0.018
G
0.010
0.090
0.0004
0.004
H
0.000
0.050
0.000
0.002
b
PIN 1 ID
E2
e
BOTTOM VIEW
A
G
F
SIDE VIEW
Rev.C.01
15
www.ame.com.tw
E-Mail: [email protected]
Life Support Policy:
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
of AME, Inc.
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.
 AME, Inc. , June 2007
Document: 1011-DS5136-C.01
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
3100 De La Cruz Blvd., Suite 201
Santa Clara, CA. 95054-2438
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
Tel : (408) 988-2388
Fax: (408) 988-2489
4.3 Switch RDSON vs. VIN.
4.4 Input Under Voltage Lockout vs. Temp
4.5 Typical Switching Waveform (with IOUT=10mA and IOUT=20mA). Total is 2
plots.
5. Tape and Reel Dimension:
From
To
Reason for Change:
1. Add OCP to datasheet.
2. Change Cout1 from 1 uF to 4.7 uF to improve characterics of Feedback Voltage
vs. Vin.
3. To reflect parts performance.
4. To reflect parts performance.
5. Follow industrial standard.
QPM018A-A