FAN4010_08 FAIRCHILD | Alldatasheet

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Technical content

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4010 Rev. 1.0.5 February 2008 FAN4010 — High-Side Current Sensor Features at +5V Low cost, accurate, high-side current sensing Output voltage scaling Up to 2.5V sense voltage 2V to 6V supply range 2μA typical offset current 3.5μA quiescent current -0.2% accuracy 6-lead MicroPak™ MLP package

Applications

Programmable current source

Description

The FAN4010 is a high-side current sense ampli fi er designed for battery-powered systems. Using the FAN4010 for high-side power-line monitoring does not interfere with the battery charger’s ground path. The FAN4010 is designed for portable PCs, cellular phones, and other portable systems where battery/DC power-line monitoring is critical. To provide a high level of fl exibility, the FAN4010 functions with an external sense resistor to set the range of load current to be monitored. It has a current output that can be converted to a ground-referred voltage with a single resistor, accommodating a wide range of battery voltages and currents. The FAN4010 features allow it to be used for gas gauging as well as uni-directional or bi-directional current monitoring.

Ordering Information

Part Number Package Operating Temperature Range Packaging Method FAN4010IL6X_F113 MicroPak™ MLP-6 -40°C to +85°C Reel All packages are lead free per JEDEC: J-STD-020B standard. Moisture sensitivity level for all parts is MSL-1. MicroPak™ is a trademark of Fairchild Semiconductor Corporation. FAN4010 High-Side Current Sensor Functional Block Diagram and Typical Circuit Load 100 IOUT VIN ROUT

34 IOUT

Figure 1. Functional Block Diagram and Typical Circuit

5 GND Ground

6 Load Connection to load or battery

Figure 2. MicroPak™ MLP (Top View)

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4010 Rev. 1.0.5 3 FAN4010 — High-Side Current Sensor Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VS Supply Voltage 0 6.3 V VIN Input Voltage Range 0 6.3 V Reliability Information Symbol Parameter Min. Typ. Max. Unit TJ Junction Temperature +150 °C TSTG Storage Temperature Range -65 +150 °C TL Refl ow Temperature (Soldering) +260 °C θJA Package Thermal Resistance(1) 456 °C/W Note: Package thermal resistance (θJA), JEDEC standard, multi-layer test boards, still air. Electrostatic Discharge Protection Symbol ESD Standard Value HBM Human Body Model 5kV CDM Charged Device Model 1kV Recommended Operating Conditions The Recommended Operating Conditions table defi nes the conditions for actual device operation. Recommended ope- rating conditions are specifi ed to ensure optimal performance to the datasheet specifi cations. Fairchild does not recom- mend exceeding them or designing to absolute maximum ratings. Symbol Parameter Min. Typ. Max. Unit TA Operating Temperature Range -40 +85 °C VS Supply Voltage Range 2 6 V VIN Input Voltage Range 2 6 V VSENSE Sensor Voltage Range, VSENSE = VIN - VLoad; ROUT = 0Ω 0 2.5 V

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4010 Rev. 1.0.5 4 FAN4010 — High-Side Current Sensor Electrical Characteristics at +5V TA = 25°C, Vs = VIN = 5V, ROUT = 100Ω, RSENSE = 100Ω, unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units Frequency Domain Response BWss Small Signal Bandwidth PIN = -40dBm(2), VSENSE = 10mV 600 kHz BWLs Large Signal Bandwidth PIN = -20dBm(3), VSENSE = 100mV 2 MHz VIN Input Voltage Range V IN = Vs 26 V IOUT Output Current(1,4) VSENSE = 0V 0 1 9 μA VSENSE = 10mV 90 100 110 μA VSENSE = 100mV 0.975 1.000 1.025 mA VSENSE = 200mV 1.95 2.00 2.05 mA VSENSE = 1V 9.7 10.0 10.3 mA Is Supply Current(1) V SENSE = 0V, GND pin current 3.5 5.0 μA ISENSE Load Pin Input Current 2n A ACY Accuracy RSENSE = 100Ω, Gm Transconductance I OUT /VSENSE 10000 μA/V Notes: 100% tested at 25˚C. -40dBm = 6.3mVpp into 50Ω. -20dBm = 63mVpp into 50Ω. Includes input offset voltage contribution.

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4010 Rev. 1.0.5 7 FAN4010 — High-Side Current Sensor

Application Information

The FAN4010 measures the voltage drop (V SENSE ) across an external sense resistor located in the high voltage side of the circuit. V SENSE is converted to a linear current via an internal operational amplifier and precision 100 Ω resistor. The value of this current is V SENSE /100Ω (internal). Output current flows from the IOUT pin to an external resistor R OUT to generate an output voltage proportional to the current flowing to the load. Use the following equations to scale a load current to an output voltage: V SENSE = ILoad • RSENSE (1) VOUT = 0.01 x VSENSE x ROUT (2) Figure 12. Functional Circuit drop, reducing the effective voltage available to the load. This can be troublesome in low-voltage applications. and allowable load voltage should be well understood. due to load currents introduces a nonlinearity error. dissipation of the copper trace. Figure 13. Using PCB Trace for R ge required for the particular downstream application. OUT value of 200 Ω should be used.

Figure 14. 6-Lead MicroPak™ Molded Leadless Package (MLP) specifi cally the warranty therein, which covers Fairchild products.

  1. DIMENSIONS ARE IN MILLIMETERS
  2. CONFORMS TO JEDEC STANDARD M0-252 VARIATION UAAD
  3. DRAWING CONFORMS TO ASME Y14.5M-1994

0.075 X 45

0.10 C B A

FAN4010 — High-Side Current Sensor © 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN4010 Rev. 1.0.5 9