PCN20071201

Product Change Notices
PCN No.: 20071201
Date: 12/05/2007
This is to inform you that AME5136 datasheet will be changed from Rev. D. 01 to
Rev. E. 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: 12/05/2007
Earliest Year/Work Week of Changed Product: 0740
Description of Change:
1. Electrical Specifications：
From
Parameter
Symbol
Test Condition
PMOS Switch RDSON,P1
RDSON
TA=- 40 to 85℃
Parameter
Symbol
Test Condition
PMOS Switch RDSON,P1
RDSON
TA=- 40 to 85℃
Min Typ Max Unit
8
10
Ω
To
Min Typ Max Unit
20
30
Ω
Reason for Change:
On some applications AME5136 had high shutdown current that could be as high
as 80uA while spec was 2uA. AME did a design improvement to bring shutdown
QPM018A-A
current into spec range. But there are drawbacks:
1. P1 RDSON spec is changed from 8 ohms typ., 10 ohms max. to 20 ohms typ., 30
ohms max.
2. Efficiency degradation is 1 to 2 % due to higher P1 RDSON. It is still within
acceptable range but customer’s discretion take precedence.
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
ILED1
0.2
RFB1
ILED1=
CH1
FB1
RFB1
AME5136
VSUB
16V
CH2
RSUB1
Main>1.5V
VSUB<0.4V
FB2
SEL
RSUB2
GND
 R

VSUB = 1 + SUB1  ×1.23
 RSUB2 
l Integrated OLED and White-LED Driver
Adjustable Output Voltage up to 20V
COUT1
4.7µF
OVP
EN
n Features
l
Main Display
SW
The AME5136 is available in a small DFN-10(
3mmx3mmx0.75mm) 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
l All AME's Lead Free Products Meet RoHS
VIN
2.7V to 5.5V
L 10µH
CIN
4.7µF
D
Main Display
COUT1
4.7µF
SW
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
l
Flip-phones / Clam-shell Cellular Phones
l
High-fashion cellular phones
RFB1
VSUB
16V
RSUB1
Main>1.5V
V SUB <0.4V
ILED1= 0.2
RFB1
FB2
SEL
RSUB2
GND
Figure 2. PWM Dimming Control Using the EN Pin
Rev.E.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= 0.2
RFB1
RFB1
AME5136
VSUB
CH2
Main>1.5V
VSUB<0.4V
ILED2
SEL
FB2
ILED2=
RSUB2
1.23
RSUB2
GND
Figure 4. 3LEDs for Main Panel and 5 LEDs for SUB Panel
2
Rev.E.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
EN
FB1
CIN
Logic
3
SEL
4
Driver
RFB1
N1
Select
Logic
P1
ref1
Driver
CH2
8
ref2
Cf
FB2
7
Organic
LED
6
GND
Figure 5. AME5136 Function Block Diagram
Rev.E.01
3
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Pin Configuration
DFN-10
(3mmx3mmx0.75mm)
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.E.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
Number
Package
Temperature
of
Output Voltage
Type
Range
Pins
E: -40OC to 85OC
V: DFN
B: 10
Special
Feature1
ADJ: Adjustable Z: Lead free
Special Feature2
(For DFN package only)
3: 3x3x0.75(mm) (LxWxH)
n Ordering Information
Part Number
Marking*
Output
Voltage
Package
Operating Ambient
Temperature Range
AME5136AEVBADJZ-3
BDZ
yyww
ADJ
DFN-10
(3mmx3mmx0.75mm)
-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.E.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
VIN
6
VEN ,V FB
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
VIN
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)
Thermal Resistance
(Junction to Ambient)
θJC
Maximum
Unit
17
o
DFN-10
(3mmx3mmx0.75mm)
Conductive
Epoxy
Internal Power Dissipation
θJA
125
PD
800
C/W
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.E.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
Symbol
VIN
Test Condition
o
TA = -40 C to 85 C
FB = 0.3V
(Not Switch)
Main Display Quiescent Current
IQ(Main)
FB = 1.15V
(Switching)
FB1 Feedback Voltage
FB2 Feedback Voltage
Switch Current Limit
VFB1
VFB2
ICL
150
TA = -40 to 85oC
150
RDSON
TA = 25 C
150
o
TA = -40 to 85 C
TA = 25 C
150
TA = -40 to 85oC
Input Under Voltage Lockout
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
o
TA = -40 to 85 C
280
o
TA = -40 to 85 C
t OFF
UVP
400
0.6
1.6
20
30
6
8
400
1.7
2
2.3
o
21
22
23
TA = -40 to 85 C
TA = -40 to 85 C
OVP
Over Temperature Protection
OTP
150
Over Temperature Hysteresis
OTH
20
Main Switch Leakage N1
ISW
VSW = 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.E.01
EN
Threshold
µA
µA
V
mA
Ω
ns
o
Output Over Voltage Protection
PMOS Switch Leakage P1
250
400
EN = 0V
TA = -40 to 85 C
µA
200
300
o
NMOS Switch RDSON , N2
Switch off time
250
400
o
o
V
200
300
Main_Switch RDSON, N1
PMOS Switch RDSON , P1
Max Units
5.5
TA = -40 to 85oC
IQ(SUB)
ISD
TA = 25 C
TA = 25 C
FB = 1.3V
(Not Switch)
Shutdown Current
Typ
2.7
o
o
FB = 0.1V
(Switching)
SUB Display Quiescent Current
Min
o
V
o
0.1
2
0.5
1
0.5
1
C
µA
0.4
TA = -40 to 85oC
V
1.5
0.3
SEL
Threshold
o
TA = -40 to 85 C
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.E.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Characterization Curve(For reference only)
Feedback Voltage vs. VIN (4LEDs)
Feedback Voltage vs. VIN (4LEDs)
0.27
0.27
COUT = 4.7µF
COUT= 1µF
0.25
0.23
VFB (V)
VFB (V)
0.25
1mA
10mA
0.21
0.23
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
0.19
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
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.4
VIN (V)
VI N (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
V IN =3V
70
65
Efficiency (%)
VIN=3.6V
80
VIN=3V
75
VIN=4.2V
70
65
60
1
4
7
10
13
Load Current ( mA )
Rev.E.01
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
n Characterization Curve(For reference only)
Main Display Efficiency ( 3LEDs )
Main Display Efficiency ( 3LEDs )
85
90
Inductor=10µH
Inductor=22µH
VIN =3V
80
VIN=3.6V
75
VIN=4.2V
70
80
Efficiency (%)
Efficiency (%)
85
VIN=4.2V
70
VIN=3.6V
65
65
60
1
4
7
10
13
16
60
19
1
7
4
10
13
16
19
Load Current (mA)
Load Current ( mA )
Sub Display Efficiency( VSUB=12V)
Sub Display Efficiency (V SUB=12V)
85
90
VIN=3.6V
VIN =4.2V
85
80
75
80
VIN=3.3V
Efficiency(%)
Efficiency (%)
VIN=3V
75
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
1
4
7
10
13
16
50
19
Inductor=22µH
1
4
7
Load Current (mA )
Sub Display Efficiency( VSUB=20V)
13
16
19
Sub Display Efficiency( VSUB=20V )
85
90
V IN =5.0V
VIN=5.5V
VIN=4.2V
80
VIN =3.3V
80
VIN=3.6V
75
VIN=2.7V
VIN=4.2V
70
65
V IN=3.3V
Efficiency (%)
85
Efficiency (%)
10
Load Current (mA)
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.E.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Characterization Curve(For reference only)
Sub Enable Current vs. VIN
(Part Switching)
Main Enable Current vs. VIN
(Part Switching)
300
300
TA=85 oC
o
TA=85 C
Enable Current (µA)
Enable Current (µA)
250
200
o
T A=-40 C
150
100
o
TA=25 C
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
T A=85oC
TA=85 oC
250
Disable Current (µA )
Disable Current (µA)
5.5
VIN (V)
300
200
TA=-40 oC
150
100
T A=25oC
250
200
TA =-40 oC
150
100
0
2.5
T A=25o C
50
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
T A=-40o C
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.E.01
5.5
2.3
1.60
0.50
2.5
5
Input Under Voltage Lockout vs. Temp.
Switch RDSON vs. VIN
1.30
4
VIN (V)
VIN ( V )
RDSO N (Ω)
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
n Characterization Curve(For reference only)
Typical Switching Waveform
1
Typical Switching Waveform
1
2
2
3
3
V OUT =12V, V IN=3.6V; 4LEDs
IOUT =20mA (RFB1=10Ω)
1) V SW= 10V/div,DC
2) V OUT , 100mV / div,AC
3) Inductor Current, 200mA / div,DC
T= 10µS / div
Inductor=10µH, COUT =4.7µF
V OUT =12V, V IN=2.7V; 4LEDs
IOUT =10mA (RFB1=20 Ω)
1) V SW= 20V/div,DC
2) V OUT , 100mV / div,AC
3) Inductor Current, 200mA / div,DC
T= 10µS / div
Inductor=10µH, COUT =4.7µF
Step Response
1
1
2
2
3
3
V OUT = 12V , V IN=3.6V
1) Load 2mA to 15mA to 2mA ,DC.
2) V OUT , 100mV / div,AC
3) Inductor Current 200mA / div,DC
T= 20µS /div
12
Start-Up/Shutdown
V OUT =12V , V IN=2.7V
1) EN , 1V/ div.DC
2) V OUT , 10/div,DC
3) Inductor Current 100mA/div,DC
Load = 4LEDs, T=2ms/div
Rev.E.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Characterization Curve(For reference only)
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
V IN =4.2V
1.219
1.209
V IN =3.6V
1.199
-40
-20
22.6
22.4
22.2
22.0
21.8
21.6
21.4
VIN=3.6V
21.2
0
20
40
o
60
80 85
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.E.01
13
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Tape and Reel Dimension
DFN-10
(3mmx3mmx0.75mm)
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
(3x3x0.75mm)
12.0±0.1 mm
4.0±0.1 mm
3000pcs
330±1 mm
Rev.E.01
AME, Inc.
Integrated White LED Driver With
Organic LED Display Power Supply
AME5136
n Package Dimension
DFN-10 (3mmx3mmx0.75mm)
D
SYMBOLS
E
TOP VIEW
A
G1
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
A
0.700
0.800
0.028
0.031
D
2.900
3.100
0.114
0.122
E
2.900
3.100
0.114
0.122
e
0.450
0.550
0.018
0.022
D1
2.350
2.450
0.093
0.096
E1
1.650
1.750
0.065
0.069
b
0.200
0.300
0.008
0.012
L
0.300
0.500
0.012
0.020
G
0.153
0.253
0.006
0.010
G1
0.000
0.050
0.000
0.002
G
REAR VIEW
e
b
E1
L
PIN #1
D1
BOTTOM VIEW
Rev.E.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. , December 2007
Document: 1011-DS5136-E.01
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
3100 De La Cruz Blvd., Suite 201
Santa Clara, CA. 95054-2438
Tel : (408) 988-2388
Fax: (408) 988-2489