Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller General Description Features The AP2160 is an ultra low output voltage N-FET linear regulator controller. The output voltage can be adjusted down to 0.5V. A Power-On-Reset (POR) circuit monitors supply voltage to prevent wrong operations. A POK pin indicates the output status. It can control other converters for power sequence. The AP2160 can be enabled by other power systems. • • • • • • • The AP2160 integrates a 0.5V reference voltage with 1% accuracy to provide tight regulation to the output voltage. The regulator also features enable control, open drain power good signal, under-voltage protection and soft start. • The AP2160 is available in 6-pin SOT-23-6 standard package. AP2160 0.5V Reference Voltage with 1% Accuracy Adjustable Output Voltage down to 0.5V Low ESR Output Capacitor (MLCC and POSCAP) Applicable Enable Control for the Output Voltage and Low Shutdown Current Under-voltage Short Circuit Protection Fast Transient Response Power Good Monitoring and Signaling for the Output Drive N-Channel MOSFETs Applications • • • • Notebook PC Computers Desktop Computers Battery Powered Devices Portable Instruments SOT-23-6 Figure 1. Package Type of AP2160 Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Pin Configuration K Package (SOT-23-6) Pin 1 Mark VCC 1 6 DRV GND 2 5 FB POK 3 4 EN Figure 2. Pin Configuration of AP2160 (Top View) Pin Description Pin Number Pin Name 1 VCC Input voltage 2 GND Common ground pin 3 POK Power OK output pin 4 EN H: Normal operation; 5 FB Output voltage feedback pin 6 DRV Jan. 2012 Function L: Shutdown Gate drive to N-FET Rev. 1. 0 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Functional Block Diagram POK 1 Power On Reset 6 Thermal Protection Band Gap VCC 3 5 DRV FB Control Logic Unit GND 2 Enable Control 4 EN Figure 3. Functional Block Diagram of AP2160 Ordering Information AP2160 - Circuit Type G1: Green Package K: SOT-23-6 TR: Tape & Reel Package Temperature Range SOT-23-6 -40 to 85°C Part Number AP2160KTR-G1 Marking ID GJC Packing Type Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit VCC to GND VCC -0.3 to 7 V DRV to GND VDRV -0.3 to VCC+0.3 V POK to GND VPOK -0.3 to VCC+0.3 V FB to GND VFB -0.3 to VCC+0.3 V EN to GND VEN -0.3 to VCC+0.3 V Operating Junction Temperature TJ 150 ºC Power Dissipation (25ºC) PD 0.4 W Operating Temperature Range TOPR -40 to 85 ºC Storage Temperature Range TSTG -65 to 150 ºC TLEAD 260 ºC ESD (Machine Model) 200 V ESD (Human Body Model) 2000 V Lead Temperature Seconds) (Soldering, 10 Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Supply Voltage (between VCC and GND) VCC 4.5 5.5 V System Input Voltage (between VIN and GND) VIN 0.5 5.5 V Ambient Operating Temperature Range TA -40 85 °C Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Electrical Characteristics VIN =1.5V, VOUT=1.05V, VEN=VCC, TA=25°C, CIN=4.7µF, COUT=22µF, unless otherwise specified. Parameter Symbol Supply Voltage Range Input Voltage Threshold Input Voltage Hysteresis UVLO UVLO Conditions VCC Min 4.5 VHYST VFB=0.48V, VCC falling 0.25 V 0.42 ISD VEN=0V Feedback Voltage VFB VEN=VCC=5V 0.495 IFB VFB=0.5V -100 VEN-H VCC=5V, VEN rising 1.3 VEN-L VCC=5V, VEN falling IEN IOUT=0mA, VIN=5V High EN Pin Input Current Output Voltage Threshold UVLO DRV Output Current DRV Pin Output Voltage POK Threshold Voltage for Power not OK Thermal Temperature Thermal Hysteresis Jan. 2012 Shutdown -1 0.5 -1 IDRV(SS) Sourcing, VFB=0V 20 IDRV(SRC) Sourcing, VFB=0.48V 2.2 IDRV(SINK) Sinking, VFB=0.52V 9.0 VDRV VPNOK VFB falling 0.2 Shutdown Rev. 1. 0 0.25 4.9 µΑ 0.505 V 100 nA 1 µΑ 0.3 V µΑ 5.0 V 0.8 1.15 1.5 84% 88% 91% VFB 200 250 mV 2 10 ms 0.8 TSD 1 mA POK sinks 1mA tDELAY mA V VFB Falling VFB=0.48V, VEN=VCC=5V VFB=0.52V, VEN=VCC=5V 0.6 0.5 VTH(UV) POK Low Voltage POK Delay Time V V Shutdown Current EN Pin Logic Threshold Voltage 5.5 3.70 VEN=VCC=5V Input Units VFB=0.48V, VCC rising ICC Pin Max VUVLO Supply Current Feedback Current Typ 150 °C 40 °C BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Typical Performance Characteristics 500 0.504 0.502 460 Supply Current (µA) Feedback Voltage (V) 480 0.500 0.498 440 420 400 0.496 380 -40 -20 0 20 40 60 80 100 120 -40 -20 o 0 20 40 60 80 100 120 o Ambient Temperature ( C) Ambient Temperature ( C) Figure 4. Feedback Voltage vs. Ambient Temperature Figure 5. Supply Current vs. Ambient Temperature 70 1.0600 60 1.0595 Ripple Rejection (dB) Output Voltage (V) 50 1.0590 1.0585 1.0580 40 Output Voltage: 1.05V Load Current: 300mA 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 100 3.0 Figure 6. Output Voltage vs. Load Current Jan. 2012 1000 10000 100000 Frequence (Hz) Load Current (A) Figure 7. Ripple Rejection vs. Frequency Rev. 1. 0 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller Function Description AP2160 provides very fast transient response and excellent load regulation. 1. Power-On-Reset 3. Under-Voltage Protection (UVP) A Power-On-Reset (POR) circuit monitors input voltages at VCC pin to prevent wrong logic controls. The POR function initiates a soft-start process after the supply voltages exceed input voltage UVLO threshold during powering on. The POR function also pulls low the POK pin regardless of the output voltage when the VCC voltage falls below the input voltage UVLO threshold minus input voltage UVLO hysteresis. AP2160 monitors the voltage on FB pin after soft-start process finishing. Therefore the UVP is disabled during soft-start. When the voltage on FB pin falls below the output voltage UVLO Threshold, the UVP circuit shuts down the output immediately. 4. Thermal Shutdown A thermal shutdown circuit limits the junction temperature of AP2160. When the junction temperature exceeds 150°C, a thermal sensor turns off the output NMOS, allowing the device to cool down. The regulator regulates the output again through initiation of a new soft-start cycle after the junction temperature drops by 40°C. 2. Output Voltage Regulation An error amplifier working with a temperature compensated 0.5V reference and an output NMOS regulates output to the preset voltage. The error amplifier designed with high bandwidth and DC gain Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Typical Application Figure 8. Typical Application Circuit of AP2160 Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet Ultra Low Output Voltage Linear N-FET Controller AP2160 Mechanical Dimensions SOT-23-6 Unit: mm(inch) 0° 2.820(0.111) 8° 3.020(0.119) 0.300(0.012) 0.400(0.016) 5 4 2 3 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 2.650(0.104) 2.950(0.116) 6 0.200(0.008) Pin 1 Mark 1 0.700(0.028)REF 0.950(0.037)TYP 0.000(0.000) 0.150(0.006) 1.800(0.071) 2.000(0.079) 0.100(0.004) 0.200(0.008) 0.900(0.035) 1.450(0.057) MAX 1.300(0.051) Jan. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 9 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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