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AMC7110/1/3/4
www.addmtek.com DESCRIPTION The AMC7110 series is member of ADDM North Star White/Blue LED driver family. No external component is required. Especially good for use Li-ion battery powered LCD display's backlight white LEDs. The special circuit design provides over 90% efficiency in low noise. Target end applications are color LCD display, such as mobile phone with color display, smart phone, PDA, etc. APPLICATIONS Small Size Color LCD Backlights Mobile Phone, Smart Phone Keypad Backlights OPTIONS
Device Name AMC7110 AMC7111 AMC7113 AMC7114 LED Sink Current 20mA 20mA 15mA 15mA Channel Number 3 4 3 4
AMC7110 / AMC7113 SOT-26 AMC7110 TSOT-26
AMC7111 / AMC7114 MSOP-8
VDD GND EN
1 2 3 6 5 4
WHITE/BLUE LED DRIVER FOR LI-ION BATTERY APPLICATION
FEATURES LED sink current 20mA and 15mA Individual current sink circuit for all LEDs outputs to prevent short / open circuit on LEDs. PTC LED current for luminosity compensation. 3 channels (SOT-26), 4 channels (MSOP-8) available. 90% efficiency Supply voltage range 2.7V ~ 6V 0.1uA standby current 2KV HBM ESD protection Advanced Bi-CMOS process.
PACKAGE PIN OUT
LED1 LED2 LED3
PGND EN V DD GND
1 2 3 4
8 7 6 5
LED1 LED2 LED3 LED4
711x
TYPICAL APPLICATION CIRCUIT
EN Enable Li-Ion Battery
CBP
AMC711x
VDD LED1 LED2 LED4 GND
VDD GND EN
LED1 LED2 LED3
PGND EN VDD GND
LED1 LED2 LED3 LED4
AMC7110 QFN 2mmx2mm
AMC7111 QFN 2mmx2mm
ORDER INFORMATION ILED (mA) 18 ~ 22 19 ~ 21 13.5 ~ 16.5 SOT-26 6-pin AMC7110DBF
DB
MSOP-8 8-pin AMC7111DNF
DN
QFN 2x2 QFN 2x2 TSOT-26 W W 6-pin 8-pin 6-pin AMC7110DJ AMC7110WF AMC7111WF
DJ
AMC7110ADBF AMC7113DBF
AMC7111ADNF AMC7114DNF
-
-
-
Note: Surface-mount packages is available in Tape & Reel. Append "T" to part number (i.e., AMC7111DNFT). The letter "F" is marked for lead free process. Copyright (c) 2007 ADDtek Corp.
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ABSOLUTE MAXIMUM RATINGS Input Voltage, VDD Output Voltage, VLEDn Voltage at all other pins Maximum Junction Temperature, TJ Storage Temperature Range Lead Temperature (soldering, 10 seconds)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. (Note)
-0.3V to 7V -0.3V to 7V -0.3V to 5.5V 150OC -40OC to 150OC 260OC
POWER DISSIPATION TABLE Package DB DJ DN W TA=70 C TA= 85C JA Derating factor ( mW/C ) TA25 C Power rating (mW) Power rating (mW) Power rating (mW) ( C/W ) TA25 OC 220 220 180 76.5 4.5 4.5 5.56 13.1 568 568 695 1634 363 363 444 1045 295 295 361 849
Note : Junction Temperature Calculation: TJ = TA + (PD x JA). PD: Power Dissipation, TA: Ambient temperature, JA: Thermal Resistance-Junction to Ambient The JA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above assume no ambient airflow.
BLOCK DIAGRAM
VDD EN
VDDI
AMC7110
Control Logic
Driving Stage Driving Stage Driving Stage
LED1 LED2 LED3 GND
Reference Current
Copyright (c) 2007 ADDtek Corp.
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PIN DESCRIPTION Pin Name LED1 ~ LED3/4 EN VDD GND PGND Pin Function Output pins; connect to LED's cathode. Enable control pin. Pulling this pin high will enable the device. Pulling this pin to GND will disable the device. Power supply Ground Power ground
RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min Typ Supply Voltage VDD 2.7 Output Sink current ILED Operating free-air temperature range Ta -40 ELECTRICAL CHARACTERISTICS VDD=3.7V, TA=25C, No Load, Input: VIH=3.3V, VIL=GND. (Unless otherwise noted) Parameter "Low" Input Voltage "High" Input Voltage "Low" Input Current "High" Input Current LED Dropout Voltage Symbol VIL VIH IIL IIH VLEDL AMC7110/1 AMC7113/4 AMC7110A AMC7111A LED Sink Current ILED AMC7110/1 AMC7113/4 LED Sink Current Deviation Supply Current Standby Supply Current ILEDn IDD IDDSTBY AMC7110A 400 0.1 Note Note VDD=2.7V~6V VLEDn=0.15~3V VLEDn=0.15~3V VDD=2.7V~6V VLEDn=0.15~3V 19 18 17 13.5 1.7 -5.0 -5.0 75 60 20 20 20 15 Condition Min Typ
Max 6 25 +85
Unit V mA
Max 0.4 +5.0 +5.0 90 75 21 22 23 16.5 3 5 800
Unit V V A A mV
Apply Pin
EN
mA
LEDn
% uA uA VDD
Note: LED Dropout Voltage: 90% x ILEDn @ VLEDn=150mV
Copyright (c) 2007 ADDtek Corp.
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APPLICATION INFORMATION
Enable
The EN pin enables and disables the device. Pulling the EN pin high will enable the device beginning sink current on LED pins. Pulling the EN pin to ground will shutdown the device reducing the IDD current to typical 0.1uA. This pin should not be left floating and need to be terminated.
LED Brightness Control
The LED sink current was fixed at 20mA or 15mA. Apply PWM signal to EN pin and control the duty that could control the LED brightness from 0% to maximum.
EN
PWM Signal Li-Ion Battery
CBP
AMC711x
Efficiency
Copyright (c) 2007 ADDtek Corp.
VDD LED1 LED2 LED4 GND
Supply Voltage and Li-ion battery low warning
AMC711X works with supply voltage range from 2.7V to 6V. The white/blue LED forward voltage is in the range of 2.9V to 3.5V at 20mA current. The supply voltage range and LED forward voltage (Vf) should be set to fully ultilize Li-ion battery energy. For example, the maximum white LED forward voltage limit at 3.2V (@ 20mA) when Li-ion battery discharg reaches 3.275V( normally around 1% ~ 3% power left in the battery). When Li-ion battery voltage is lower than the presetted low level, the LED current(brightness) will start to decrease.
The ACR (Advanced Current Regulator) architecture offers ultra low output dropout that significantly improves the efficiency compared to Inductive Boost type or Capacitor Charge Pump type LED driver. The system efficiency, defined as the ratio between the LEDs power and the input supplied power, is: Efficiency = (Vf1 x ILED1 + Vf2 x ILED2 + Vf3 x ILED3 + Vf4 x ILED4) / (VDD x IDD) Where, Vf is the forward voltage of LED.
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CHARACTERIZATION CURVES
QUIESCENT CURRENT vs. SUPPLY VOLTAGE
( 4 LEDs, Vf=3.2V at 20mA/LED) 300
QUIESCENT CURRENT (uA)
EFFICIENCY vs. SUPPLY VOLTAGE
( 4 LEDs, Vf=3.2V at 20mA/LED) 100
EFFICIENCY P LED/PSUPPLY (%)
250 200 150 100 50 0 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Supply Voltage (V)
95 90 85 80 75 70 65 60 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Supply Voltage (V)
ILED vs. SUPPLY VOLTAGE
25
POWER IN vs. SUPPLY VOLTAGE
40 35 ( 4 LEDs, Vf=3.2V at 20mA/LED)
(ILED=20mA, Vf=3.2V)
20
30 Supply Power (mW)
3.2 3.3 3.4 3.5 3.6 3.7 3.8 Supply Voltage (V) 3.9 4.0 4.1 4.2
LED Current(mA)
15
25 20 15 10 5
10
5
0
0 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 Supply Voltage(V)
QUIESCENT CURRENT vs TEMPERATURE
400 350
AMC7110/1 AMC7113/4
Quesent Current (uA)
300 250 200 150 100 50 0 0 10 20 30 40 50 60 70 80 90 100 110 120
Temperature. (C)
Copyright (c) 2007 ADDtek Corp.
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ILED vs. Efficiency
( VDD=3.7V, LED Vf=3.2V) 100 95 20.9 20.8 20.7
ILED vs. TEMPERATURE
Efficiency PLED / PSUPPLY (%)
LED Current (mA)
90 85 80 75 70 65 60 55 50 5 7 9 11 13 15 17 19 21
20.6 20.5 20.4 20.3 20.2 20.1 20.0
0 LED Current (mA)
10
20
30
40
50
60
70
80
90
100 110 120
Temperature. (C)
Copyright (c) 2007 ADDtek Corp.
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PACKAGE
Surface Mount SOT-26 (DB)
D b L L1
MIN A A1 0.012 0.003
INCHES TYP MAX 0.057 0.006 0.020 0.009
MILLIMETERS MIN TYP MAX 0.90 0.30 0.08 1.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 BSC 1.90 BSC 0.30 0.45 0.60 REF 0.25 BSC 0.60 1.45 0.15 1.30 0.50 0.22
E
E1
A2 0.035 0.045 0.051 b c D
c
0.114 BSC 0.110 BSC 0.063BSC 0.037 BSC 0.075BSC 0.012 0.018 0.024 0.024 REF 0.010 BSC 5 10 15 5
e e1 M
L2
E E1 e e1 L L1 L2
A
A2 M
A1
M
10
15
8-Pin Plastic MSOP (DN)
A J
INCHES MIN A B
P
MILLIMETERS MAX MIN 2.90 2.90 TYP 3.00 3.00 1.02 0.30 0.40 0.00 0 4.70 0.53 0.65 0.15 0.006 8 4.90 0.15 8 5.10 0.80 MAX 3.10 3.10 1.12
TYP
0.114 0.118 0.122 0.114 0.118 0.122 0.040 0.044 0.012 0.016 0.021 0.031 0.000 0 0.026 0.006 -
C D F G J
M
F
D
G
K M P
0.185 0.193 0.201
C K
Copyright (c) 2007 ADDtek Corp.
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AMC7110/1/3/4
6-Pin QFN 2mmx2mm
SYMBOLS
D
MIN.
TYP.
MAX.
E
A A3
b D1 e E1 L A1
A A1 A3 b D D1 E E1 e L
0.800 0.000 0.200 1.950 1.350 1.950 0.750 0.300
0.850 0.203 0.250 2.000 1.400 2.000 0.800 0.650 0.350
0.900 0.050 0.300 2.050 1.450 2.050 0.850 0.400
UNIT: MILLIMETERS
8-Pin QFN 2mmx2mm
SYMBOLS
D
MIN.
TYP.
MAX.
E
A A3 b
A A1 A3 b D D1 E E1 e L
0.800 0.000 0.200 1.950 1.150 1.950 0.550 0.300
0.850 0.203 0.250 2.000 1.200 2.000 0.600 0.500 0.350
0.900 0.050 0.300 2.050 1.250 2.050 0.650 0.400
UNIT: MILLIMETERS
D1
e
E1 L A1
Copyright (c) 2007 ADDtek Corp.
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Surface Mount TSOT-26
D b L L1 C
SYMBOLS A
MILLIMETERS MIN --0.00 0.84 0.35 0.10 2.70 2.60 1.40 ----0.30 0.5 0 4 TYP --0.05 0.87 0.40 0.125 2.90 2.80 1.60 0.95 1.90 0.40 0.6 4 10 MAX 1.00 0.10 0.90 0.50 0.15 3.10 3.00 1.80 ----0.60 0.7 8 12
E
A1
E1
A2 b C D
e e1 4x1
E E1 e e1 L L1
4x1
A
A2
A1
1
Copyright (c) 2007 ADDtek Corp.
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IMPORTANT NOTICE
ADDtek reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDtek integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of ADDtek products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. ADDtek assumes to no liability to customer product design or application support. ADDtek warrants the performance of its products to the specifications applicable at the time of sale.
ADDtek Corp. 9F, No. 20, Sec. 3, Bade Rd., Taipei, Taiwan, 105 TEL: 2-25700299 FAX: 2-25700196
Copyright (c) 2007 ADDtek Corp.
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