LTC4000 e lecTrical characTerisTics The l denotes the specifications which apply over the full operatingjunction temperature range, otherwise specifications are at TA = 25°C. VIN = VCLN = 3V to 60V unless otherwise noted (Notes 2, 3). SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITSBattery PowerPath Control Battery Discharge PowerPath Forward VBAT,CSN, 2.8V ≤ VBAT ≤ 60V l 0.1 8 20 mV Regulation Voltage Battery PowerPath Fast Reverse Turn-Off VBAT,CSN, 2.8V ≤ VBAT ≤ 60V, Not l –90 –50 –20 mV Threshold Voltage Charging, VBGATE = VCSN – 2.5V, ∆IBGATE/∆VBAT,CSN ≥ 100μA/mV Battery PowerPath Fast Forward Turn-On VBAT,CSN, 2.8V ≤ VCSN ≤ 60V, l 40 80 130 mV Threshold Voltage VBGATE = VBAT – 1.5V, ∆IBGATE/∆ VBAT,CSN ≥ 100μA/mV Battery Gate Turn-Off Current VBGATE = VCSN – 1.5V, VCSN ≥ VBAT, –0.3 μA VOFB < VOUT(INST_ON) and Charging in Progress, or VCSN = VBAT and Not Charging Battery Gate Turn-On Current VBGATE = VBAT – 1.5V, VCSN ≥ VBAT, 0.3 μA VOFB > VOUT(INST_ON) and Charging in Progress, or VCSN = VBAT – 20mV IBGATE(FASTOFF) Battery Gate Fast Turn-Off Current VCSN = VBAT + 0.1V and Not –0.5 mA Charging, VBGATE = VCSN – 3V IBGATE(FASTON) Battery Gate Fast Turn-On Current VCSN = VBAT – 0.2V, 0.7 mA VBGATE = VBAT – 1.5V VBGATE(ON) Battery Gate Clamp Voltage IBGATE = 2μA, VBAT = 12V to 60V, l 13 15 V VCSN = VBAT – 0.5V, Measure VBAT – VBGATE Battery Gate Off Voltage IBGATE = – 2μA, VBAT = 2.8V to 60V, l 0.45 0.7 V VCSN = VBAT + 0.5V and not Charging, Measure VCSN – VBGATE BIAS Regulator Output and Control Pins VBIAS BIAS Output Voltage No Load l 2.4 2.9 3.5 V ∆VBIAS BIAS Output Voltage Load Regulation IBIAS = – 0.5mA –0.5 –10 % BIAS Output Short-Circuit Current VBIAS = 0V –12 mA Transconductance of Error Amp CC = 1V 0.5 mA/V Open Loop DC Voltage Gain of Error Amp CC = Open 80 dB IITH(PULL_UP) Pull-Up Current on the ITH Pin VITH = 0V, CC = 0V –6 –5 –4 μA IITH(PULL_DOWN) Pull-Down Current on the ITH Pin VITH = 0.4V, CC = Open l 0.5 1 mA Open Loop DC Voltage Gain of ITH Driver ITH = Open 60 dB Note 1: Stresses beyond those listed under Absolute Maximum Ratings determined by specific operating conditions in conjunction with board may cause permanent damage to the device. Exposure to any Absolute layout, the rated package thermal impedance and other environmental Maximum Rating condition for extended periods may affect device factors. The junction temperature (TJ, in °C) is calculated from the ambient reliability and lifetime. temperature (TA, in °C) and power dissipation (PD, in Watts) according to Note 2: The LTC4000 is tested under conditions such that T the following formula: J ≈ TA. The LTC4000E is guaranteed to meet specifications from 0°C to 85°C junction TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal temperature. Specifications over the –40°C to 125°C operating junction impedance. temperature range are assured by design, characterization and correlation Note 3: All currents into pins are positive; all voltages are referenced to with statistical process controls. The LTC4000I is guaranteed over the GND unless otherwise noted. full –40°C to 125°C operating junction temperature range. Note that the Note 4: These parameters are guaranteed by design and are not 100% maximum ambient temperature consistent with these specifications is tested. 4000fb For more information www.linear.com/LTC4000 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
