ACT3704NH-T

ACT3704 Rev2, 26-Jul-07 12V Linear-Mode Battery Charger for Li+/Li-polymer Cells FEATURES • • • • • • • • • • • • Internal High Voltage MOSFET Up to 12V Input Voltage ±0.5% Output Voltage Accuracy Charge Current Thermal Foldback Programmable Termination Voltage Programmable Fast Charge Current Programmable Charging Timer No Blocking Diode Required Low Reverse Leakage Preconditioning for Deeply Depleted Battery Low Quiescent Current Standby Mode Space-Saving, Thermally-Enhanced SOP8/EP, TDFN33-8 GENERAL DESCRIPTION The ACT3704 is a complete linear charging solution for single cell Lithium Ion and Lithium Polymer batteries. It incorporates an internal 12V power MOSFET for Constant-Current, Constant-Voltage control (CC/CV). The battery regulation voltage accuracy is ± 0.5% and can be set to either 4.1V or 4.2V. The charge current is programmed with an external resistor to a maximum of 1A to minimize total charge time. The reverse leakage current from the battery is less than 1µA if the input adaptor is disconnected or if there is a reverse battery connection. The ACT3704 is available in thermally-enhanced SOP-8/EP, and TDFN33-8 packages to accommodate high charge current operation and minimize total charging time. APPLICATIONS • • • • • Mobile Phone Wireless Headsets Portable Media Players Cradle Chargers Portable Devices TYPICAL APPLICATION CIRCUIT Innovative Products. Active Solutions. -1- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 ORDERING INFORMATION PART NUMBER ACT3704YH ACT3704YH-T ACT3704NH-T TEMPERATURE RANGE -40°C to 85°C -40°C to 85°C -40°C to 85°C PACKAGE SOP-8/EP SOP-8/EP TDFN33-8 PINS 8 8 8 PACKING TUBE TAPE & REEL TAPE & REEL PIN CONFIGURATION PIN DESCRIPTIONS PIN NUMBER PIN NAME PIN DESCRIPTION Open-Drain Charge Status Indicator. nEOC is a high voltage output and can withstand up to 12V, allowing it to drive LEDs that are directly connected to IN or to a lower voltage supply. nEOC features an internal 7mA current limit, allowing this pin to directly drive an LED for a visual charge-status indicator. For a logic-level charge status indicator, simply connect a 10kΩ or greater pull-up resistor between nEOC and a suitable voltage supply. Charge Termination Voltage Adjust. Connect ADJ to G to select 4.10V termination voltage or connect ADJ to IN to select 4.20V termination voltage. Power Input. IN can be withstand operating voltages of up to 12V. Bypass to G with a 1µF or larger capacitor. Charge Current Set. Program the maximum charge current by connecting a resistor (RISET) between ISET and G. See the Charge Current Programming section for more information. Safety Timer program pin. Connect to capacitor CTIMER. Charge Battery Output. Connect this pin to the positive terminal of the battery. Bypass this pin as close as possible to IC with 1µF ceramic capacitor. Ground. Open-Drain Charge Status Indicator. nSTAT can withstand up to 12V, allowing it to drive LEDs that are directly connected to IN or to a lower voltage supply, nSTAT features an internal 7mA current limit, allowing this pin to directly drive an LED for a visual charge-status indicator. For a logic-level charge status indicator, simply connect a 10kΩ or greater pullup resistor between nSTAT and a suitable voltage supply. Exposed Pad. The exposed thermal pad should be connected to board ground plane and G. The ground plane should include a large exposed copper pad under the package to connect the entire pad for thermal dissipation (see package outline). -2www.active-semi.com Copyright © 2007 Active-Semi, Inc. 1 nEOC 2 3 4 5 6 7 ADJ IN ISET TIMER BAT G 8 nSTAT EP EP Innovative Products. Active Solutions. ACT3704 Rev2, 26-Jul-07 ABSOLUTE MAXIMUM RATINGS PARAMETER IN, ADJ, nSTAT, nEOC to G BAT to G ISET, TIMER to G ISET, TIMER Current Junction to Ambient Thermal Resistance (θJA) Maximum Power Dissipation SOP-8/EP TDFN33-8 SOP-8/EP TDFN33-8 VALUE -0.3 to 15 -0.3 to 7 -0.3 to 6 ±5 45 36.7 1.8 2 125 -65 to 150 300 UNIT V V V mA °C/W °C/W W W °C °C °C Maximum Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) : Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VIN = VTERM + 1V, VBAT = 3.6V, TA = 25°C, unless otherwise specified.) PARAMETER Input Supply Voltage, VIN ADJ = G Battery Termination Voltage, VTERM ADJ = IN CONDITIONS MIN 4.2 4.079 TYP 4.1 4.2 0.03 0.05 MAX 12 4.121 4.141 4.221 4.242 0.1 0.1 2.95 1000 UNIT V TA = -40°C to 85°C TA = -40°C to 85°C 4.059 4.179 4.158 V Line Regulation Load Regulation Precondition Threshold Precondition Threshold Hysteresis Constant Current Adjust Range Fast Charge Constant Current Precondition Charge Current End-of-Charge Threshold Charge Restart Threshold PMOS On Resistance UVLO Threshold UVLO Hysteresis BAT Reserve Leakage Current IN Supply Current IN Supply Current ADJ Voltage Threshold Thermal Regulation Threshold Innovative Products. Active Solutions. VIN = VTERM + 1V to 12V, IBAT = 10mA VIN = VTERM + 1V, IBAT = 10mA to 250mA 2.55 100 VBAT = 3.8V, RISET = 50k VBAT = 2.5V, RISET = 50k RISET = 50k VBAT Falling VBAT = 3.8V, IBAT = 100mA IN Rising IN Falling Input floating or charger disabled Charger Standby Charger Enable 3.8 0.45 %/V % V mV mA A mA mA V 2.75 125 0.51 51 51 VTERM - 0.1 0.7 4.0 1 0.4 500 0.7 1.7 120 0.57 1.2 4.2 4 800 2 Ω V V µA µA mA V °C -3- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 ELECTRICAL CHARACTERISTICS CONT’D (VIN = VTERM + 1V, VBAT = 3.6V, TA = 25°C, unless otherwise specified.) PARAMETER nSTAT, nEOC Outputs Sink Current Output Low Voltage Leakage Current CONDITIONS VnSTAT = VnEOC = 2V ISINK = 1mA VnSTAT = VnEOC = 12V MIN 4 TYP 7 MAX UNIT 10 0.4 1 mA V µA Charge Current Setting ISET Pin Voltage IBAT to ISET Current Ratio 1.15 1.20 22 1.25 V kA/A Charge Timers TIMER Frequency POR Start Delay Transition Out of Preconditioning Delay Current Rise Time Out of Preconditioning Normal Safety Timer Precondition Safety Timer Total Safety Timer Time to End of Charge CTIMER = 2.2nF CTIMER = 2.2nF CTIMER = 2.2nF CTIMER = 2.2nF TIMER Floating 0.8 1.5 1 0.1 300 0.5 20 1 10 2.2 kHz ms ms µs hr mins hr mins Innovative Products. Active Solutions. -4- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 TYPICAL PERFORMANCE CHARACTERISTICS (VIN = 5V, TA = 25°C, unless otherwise specified.) Battery Termination Voltage vs. Charge Current 4.50 4.00 3.50 3.00 600 550 500 450 400 Charge Current vs. Battery Termination Voltage ACT3704-002 VIN = 5V RISET = 47k ADJ = G ACT3704-001 VTERM (V) IBAT (mA) 2.50 2.00 1.50 1.00 0.50 VIN = 5V RISET = 27k 0.00 ADJ = G 0 200 400 600 800 1000 350 300 250 200 150 100 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 IBAT (mA) VBAT (V) Charge Current vs. Supply Voltage 600 575 550 525 500 475 Charge Current vs. Battery Voltage ACT3704-003 ACT3704-004 Thermal Regulation Circuitry Active 500 IBAT (mA) IBAT (mA) 400 450 425 400 375 300 200 VIN = 5V VBAT = 3.7V RISET = 47k 4.5 6.5 8.5 10.5 12.5 14.5 350 325 300 VIN = 5V RISET = 47k ADJ = G 100 275 3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10 VIN (V) VBAT (V) Charge Current vs. RISET 1000 900 800 700 4.300 4.275 4.250 Battery Termination Voltage vs. Supply Voltage ACT3704-005 ACT3704-006 500 400 300 200 100 0 0 VIN = 5V VBAT = 3.7V ADJ = G 50 100 150 200 250 300 350 VTERM (V) IBAT (mA) 600 4.225 4.200 4.175 4.150 4.125 4.100 5.0 RISET = 47k IBAT = 100mA ADJ = IN 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 RISET (k) Innovative Products. Active Solutions. -5- VIN (V) www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (VIN = 5V, TA = 25°C, unless otherwise specified.) Battery Termination Voltage vs. Temperature Battery Termination Voltage VTERM (V) 4.220 Battery Termination Voltage vs. Temperature Battery Termination Voltage VTERM (V) 4.120 ACT3704-007 ACT3704-008 4.210 4.110 4.200 4.100 4.190 VIN = 5V RVIN = 5V ISET = 47k ADJ G ADJ == IN -25 0 25 50 75 85 4.090 VIN = 5V ADJ = G -25 0 25 50 75 85 4.180 -50 4.080 -50 Temperature (°C) Temperature (°C) Charge Current vs. Ambient Temperature 550 Precondition Threshold Voltage vs. Ambient Temperature Precondition Threshold Voltage (V) 2.85 2.83 2.81 2.79 2.77 2.75 2.73 2.71 2.70 -40 ACT3704-009 ACT3704-010 530 IBAT (mA) 510 490 470 VIN = 5V RISET = 47k ADJ = VIN -40 -20 0 20 40 60 80 450 -20 0 20 40 60 80 Temperature (°C) Temperature (°C) Internal Charge Timer Frequency vs. Temperature 1.325 1.275 4.20 Undervoltage Lockout Voltage vs. Temperature ACT3704-0012 ACT3704-0011 Frequency (kHz) 1.225 1.175 1.125 1.075 1.025 1.000 -40 -15 VIN = 7V VIN = 5V 4.10 UVLO (V) 4.00 3.90 3.80 10 35 60 85 -40 -15 10 35 60 85 Temperature (°C) Innovative Products. Active Solutions. -6- Temperature (°C) www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 FUNCTIONAL BLOCK DIAGRAM IN BODY BAT Q1 UVLO REG REF VREF = 1.20V ADJ ADJCTRL + BAT CVAMP + 1V Thermal Foldback TJ > 120°C + + - CCAMP EOCCOMP CHARGE CONTROL G ISET TIMER nEOC OSCILLATOR nSTAT 7mA 7mA Innovative Products. Active Solutions. -7- www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 FUNCTIONAL DESCRIPTION The ACT3704 is an intelligent, stand-alone Constant-Current, Constant-Voltage control (CC/CV), linear-mode, single-cell charger for Lithium-Based cell chemistries. The device incorporates current and voltage sense circuitry, an internal 12V power MOSFET, a 120°C thermal-regulation loop that minimizes total charge time, a complete state-machine that implements charge safety features, and circuitry that eliminates the reverse-blocking diode required by conventional charger designs. The ACT3704 features an accurate charge termination voltage, programmable fast-charge constant current, and a programmable charge safety timeout period. Other features include current-limited nSTAT and nEOC outputs that can directly drive LED indicators without external resistors or provide a logiclevel status signal to the host microprocessor. Table 1: Charge Current Programming RISET(kΩ) 89 64 56 47 33 27 Charge Current (mA) 297 413 470 562 800 989 CC/CV Regulation Loop At the core of the ACT3704 is a CC/CV regulation loop, which regulates either current or voltage as necessary to ensure fast and safe charging of the battery. In a normal charge cycle, this loop regulates the current to the value set by RISET. Charging continues at this current until the battery voltage reaches the charge termination voltage. At this point the CV loop takes over, and charge current is allowed to decrease as necessary to maintain charging at the charge termination voltage. The RISET values in Table 1 are standard 1%. Note that the actual charging current may be limited to a current that is lower than the programmed fastcharge current due to the ACT3704’s internal thermal-regulation loop. See the Thermal Regulation Loop section for more information. Thermal Regulation Loop The ACT3704 features an internal thermal regulation loop that reduces the charging current as necessary to ensure that the die temperature does not rise beyond the thermal regulation threshold of 120°C. This feature protects the ACT3704 against excessive junction temperature and makes the ACT3704 more accommodating to aggressive thermal designs. Note, however, that attention to good thermal designs is required to achieve the fastest possible charge time by maximizing charge current. In order to account for the extended total charge time resulting from operation in thermal regulation mode, the charge timeout periods are extended proportionally to the reduction in charge current. In order to ensure a safe charge, the maximum timeout periods are limited to 2x the room temperature values. The conditions that cause the ACT3704 to reduce charge current in accordance to the internal thermal regulation loop can be approximated by calculating the power dissipated in the part. Most of the power dissipation is generated from the internal charge MOSFET (Q1 in the Functional Block Diagram). The power dissipation is calculated to be approximately: Setting The Charge Termination Voltage The ACT3704 offers two pin-programmable battery termination voltages; connect ADJ to G to select a 4.10V termination voltage, connect ADJ to IN (or to a voltage greater than 1.4V) to select a 4.20V termination voltage. Charge Current Programming The maximum charging current is programmed by an external resistor (RISET) connected from ISET to G. Calculate RISET as follows: RISET = 22kΩ × (1.20V / IBAT ) Where IBAT is Amps. (1) PD = (VIN - VBAT ) × IBAT (3) The voltage at ISET is fixed at 1.20V, and the maximum charge current at BAT is set by: IBAT = 22kΩ × (1.20V / RISET ) Innovative Products. Active Solutions. (2) PD is the power dissipated, VIN is the input supply voltage, VBAT is the battery voltage and IBAT is the charge current. The approximate ambient tempera-8www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 ture at which the thermal regulation begins to protect the IC is given by : T A = 120 °C − PD × θ JA T A = 120 °C - (VIN - VBAT ) × I BAT × θ JA 1000mA to a battery from a 5V supply at 25°C. Without a good backside thermal connection, this number could drop to less than 500mA. (4) State Machine Precondition State A new charging cycle begins with the PRECONDITION state, and operation continues in this state until VBAT exceeds the Precondition Threshold Voltage of 2.8V. When operating in PRECONDITION state, the cell is charged at a reduced current given by: (8) Which is 10% of the programmed maximum fastcharge constant current, IBAT. Once VBAT reaches the Precondition Threshold Voltage the state machine jumps to the NORMAL state. If VBAT does not reach the Precondition Threshold Voltage before the Precondition Timeout period (TPRECONDITION) expires, then a damaged cell is detected and the state machine jumps to the TIMEOUT-FAULT State. The Precondition Timeout period is default to 20mins with an external 2.2nF CTIMER capacitor, or it can be increased with a larger value capacitor. See the Safely Timers section for more information. Normal State Normal state is made up of two operating modes, fast charge Constant-Current (CC) and ConstantVoltage (CV). IPRECONDITION = 2.200 × (VISET / RISET ) Example: The ACT3704 is operating from a 5V wall adapter and is programmed to supply 700mA fast charge current to a discharged Li-Ion battery with a voltage of 3.4V. Assuming θJA is 45°C/W, the ambient temperature at which the device will begin to reduce the charge current is approximately: T A = 120 °C - (5V - 3.4V ) × (700 mA ) × 45 °C T A = 120 °C − 1 . 12 W × 45 °C = 120 °C − 50 . 4 °C T A = 69 . 6 °C (5) The ACT3704 can be used above 69.6°C ambient, but the charge current will be reduced from 700mA. The approximate current at a given ambient temperature can be approximated by: I BAT = (120 °C − T A ) (VIN − VBAT ) × θ JA (6) Using the previous example with an ambient temperature of 70°C, the charge current will be reduced to approximately: I BAT = (120 °C - 70 °C ) (5V - 3.4V ) × 45 °C / W = 50 °C 72 °C / A (7) TA = 694 mA ACT3704 applications do not need to be designed for worst-case thermal conditions, since the part will automatically reduce power dissipation if the thermal regulation threshold of approximately 120°C is reached. However, in order to deliver maximum charge current under all conditions, it is critical that the exposed metal pad on the backside of the package exposed pad (EP) is soldered directly to the PC board ground. Correctly soldered to a double sided 1oz copper board, the ACT3704 has a thermal resistance of approximately 45°C/W with SOP8 and 36.7°C/W with TDFN33-8. Failure to make thermal contact between the exposed pad on the backside pf the package and the copper board will result in thermal resistances far greater than 45°C/W with SOP8 and 36.7°C/W with TDFN33-8. For example, a correctly soldered ACT3704 can deliver up to Innovative Products. Active Solutions. In CC mode, the ACT3704 charges at the current programmed by RISET (see the Charge Current Programming section for more information). During a normal charge cycle fast-charge continues in CC mode until VBAT reaches the charge termination voltage (VTERM), at which point the ACT3704 charges in CV mode. Charging continues in CV mode until the charge current drops to 10% of the programmed maximum charge current (IBAT), at which point the state machine jumps to the TOP-OFF state. If VBAT does not proceed out of the NORMAL state before the Normal Timeout period (TNORMAL) expires, then a damaged cell is detected and the state machine jumps to the TIMEOUT-FAULT State. The Normal Timeout period is default to 30mins, or it can be increased with an external 2.2nF CTIMER capacitor or can be changed with a larger value external capacitor. See the Safety Times section for more information. -9www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 Top-Off State In the TOP-OFF state, the cell is charged in constant-voltage (CV) mode, with the charge current limited by the internal chemistry of the cell, decreasing as charging continues. If the ACT3704 state machine does not complete a charging cycle before the TOP-OFF Timeout period (TTOPOFF) expires, then a damaged cell is detected and the state machine jumps to the TIMEOUTFAULT State. The TOP-OFF Timeout period is default to 60mins with a 2.2nF CTIMER capacitor, or it can be increased with a larger value external capacitor. See the Safety Timers section for more information. In TOP-OFF state, nSTAT indicates charge complete but charge current still continues. After another delay of 60mins, then charging stops and charge current becomes zero. When the battery voltage drops below the charge restart voltage, the charging process will start again. End of Charge State In the End of Charge (EOC) state, the ACT3704 presents a high-impedance to the battery, allowing the cell to “relax” and minimize battery leakage current. The ACT3704 continues to monitor the cell voltage, however, so that it can reinitiate charging cycles as necessary to ensure that the cell remains fully charged. Charge Restart Under normal operation, the state machine initiates a new charging cycle by jumping to the NORMAL CHARGE state when VBAT drops below the Charge Termination Threshold by more than the Charge Restart Threshold of 100mV (typ). Timeout-Fault State In TIMEOUT-FAULT state, both nSTAT and nEOC indicators are OFF, or high-Z. For a logic-level indication, simply connect a resistor from each output to an appropriate voltage supply. Reverse Battery & Shutdown The ACT3704 includes internal circuitry that eliminates the need for series blocking diodes, reducing solution size and cost as well as dropout voltage relative to conventional battery chargers. When VIN goes below the ACT3704’s under voltage-lockout (UVLO) voltage, or when VIN drops below VBAT, the ACT3704 automatically goes into SUSPEND mode and reconfigures its power switch to minimize current drain from the battery. Safety Timers The ACT3704 has several internal charge safety timers, for each of the PRECONDITION and NORMAL charge states as well as TOPOFF timeout period. If any of these timers expire before charge successfully proceeds through the associated state, the ACT3704 enters the TIMEOUT-FAULT state. The TIMEOUT-FAULT state can only be reset by powercycling the ACT3704. Each of these timers are internally set according to the following ratios: TPRECONDITION = 1 × TO (9) TNORMAL = 1.5 × TO TTOTAL = 3 × TO (10) (11) All the timers could be set by an external capacitor by (CTIMER in nF) where TO is given by: TO = 9 × CTIMER ± 15% (12) When operating in thermal regulation mode the timeout periods are extended in order to compensate for the effect of the reduced charging current on total charge time. In order to ensure a safe charge, the maximum timeout periods are limited to 2x the room temperature values. Charge and EOC Status Outputs nSTAT and nEOC are open-drain outputs that sink current when asserted and are high-Z otherwise. For more information regarding the state of nSTAT and nEOC throughout the entire charging cycle, see Table 3. These outputs have internal 7mA current limits, and are capable of directly driving LEDs, without the need of current-limiting resistors or other external circuitry, for a visual charge-status indication. To drive an LED, simply connect the LED between each pin and an appropriate supply (typically VIN). Innovative Products. Active Solutions. - 10 www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 Table 2: Safety Timer Settings CTIMER (nF) 2.2 3.3 6 10 30 TPRECONDITION (minutes) 20 30 60 90 210 TNORMAL (minutes) 30 45 90 120 315 TTOTAL (minutes) 60 90 180 270 630 STATE DIAGRAM ANY STATE VIN < 4.0V SUSPEND VIN > 4.0V PRECONDITION Time > TPRECONDITION VBAT > 2.8V Time > TNORMAL VBAT < 2.7V TIMEOUT-FAULT NORMAL VBAT = VREG Time > TTOTAL TOP OFF VBAT < VREG IBAT < 10% ICHRG and T > TEOC END OF CHARGE VBAT < VTERM - 0.1V Innovative Products. Active Solutions. - 11 - www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 Figure 1: Typical Li+ Charge Profile and ACT3704 Charge States VTERM IBAT Current Voltage VPRECONDITION 4.20V 510mA 2.75V IPRECONDITION, IEOC 51mA TEOC STATE A B C D A: PRECONDITION State B: NORMAL State C: TOP-OFF State D: END OF CHARGE State STATUS AND EOC INDICATORS Table 3: nSTAT and nEOC Indicator States STATE SHUTDOWN PRECONDITION NORMAL TOPOFF DELAY TIME TO EOC END OF CHARGE TIMEOUT FAULT nSTAT OFF ON ON ON OFF OFF OFF nEOC OFF OFF OFF OFF ON ON OFF Innovative Products. Active Solutions. - 12 - www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 APPLICATION INFORMATION Figure 2: Application Circuit for 4.1V Battery, 470mA Charge VIN CIN 10µF nEOC ADJ IN RISET 56k ISET G nSTAT BAT ACT3704 TIMER CTIMER = 10nF CBAT 1µF Li+ or Li-POLYMER BATTERY Figure 3: Application Circuit for 4.2V Battery, 800mA Charge Innovative Products. Active Solutions. - 13 - www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 PACKAGE OUTLINE SOP-8/EP PACKAGE OUTLINE AND DIMENSIONS DIMENSION IN MILLIMETERS MIN D1 SYMBOL A e D DIMENSION IN INCHES MIN 0.053 0.002 0.053 0.013 0.007 0.185 0.126 0.150 0.228 0.091 MAX 1.750 0.150 1.550 0.510 0.250 5.100 3.402 4.000 6.200 2.513 MAX 0.069 0.006 0.061 0.020 0.010 0.200 0.134 0.157 0.244 0.099 1.350 0.050 1.350 0.330 0.170 4.700 3.202 3.800 5.800 2.313 A1 A2 b c D D1 E E1 E2 e L θ b 1.270 TYP 0.400 0° 1.270 8° 0.050 TYP 0.016 0° 0.050 8° Innovative Products. Active Solutions. - 14 - www.active-semi.com Copyright © 2007 Active-Semi, Inc. ACT3704 Rev2, 26-Jul-07 PACKAGE OUTLINE TDFN33-8 PACKAGE OUTLINE AND DIMENSIONS SYMBOL A A1 A3 D E D2 E2 b e L DIMENSION IN MILLIMETERS MIN 0.700 0.000 0.153 2.900 2.900 2.200 1.400 0.200 DIMENSION IN INCHES MIN 0.028 0.000 0.006 0.114 0.114 0.087 0.055 0.008 MAX 0.800 0.050 0.253 3.100 3.100 2.400 1.600 0.320 MAX 0.031 0.002 0.010 0.122 0.122 0.094 0.063 0.013 0.650 TYP 0.375 0.575 0.026 TYP 0.015 0.023 Innovative Products. Active Solutions. - 15 - www.active-semi.com Copyright © 2007 Active-Semi, Inc.