Datasheet LTC4007-1 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 4A, High Efficiency, Li-Ion Battery Charger |
| Pages / Page | 24 / 5 — Typical perForMance characTerisTics. INFET Response Time to. Reverse … |
| File Format / Size | PDF / 309 Kb |
| Document Language | English |
Typical perForMance characTerisTics. INFET Response Time to. Reverse Current. Line Regulation. VOUT vs IOUT
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LTC4007-1
Typical perForMance characTerisTics INFET Response Time to Reverse Current Line Regulation VOUT vs IOUT
0.10 0 Vgs OF PFET (2V/DIV) 0.05 V –0.5 gs = 0 0 –1.0 –0.05 –1.5 –0.10 C3C4 = OPEN –2.0 Vs OF PFET (5V/DIV) –0.15 –2.5 ERROR (%) –0.20 C3C4 = GND –3.0 –0.25 V OUT –3.5 V –0.30 s = 0V –4.0 I –0.35 OUTPUT VOLTAGE ERROR (%) d (REVERSE) OF PFET (5A/DIV) –0.40 –4.5 3C4C = GND 3C4C = OPEN Id = 0A –0.45 –5.0 1.25µs/DIV 13 15 17 19 21 23 25 27 29 31 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 TEST PERFORMED ON DEMOBOARD VDCIN (V) OUTPUT CURRENT (A) VIN = 15VDC VCHARGE = 12.6V 40071 G02 40071 G03 CHARGER = ON PFET = 1/2 Si4925DY ICHARGE = <10mA 40071 G01
Disconnect/Reconnect Battery PWM Frequency vs Duty Cycle (Load Dump) 1A Load Step (Battery Present)
350 300 3A STEP CHARGER CURRENT (1A/DIV) 250 1A STEP 1A STEP VFLOAT 200 1V/DIV 150 PROGRAMMED CURRENT = 10% OUTPUT VOLTAGE (500mV/DIV) 100 3A STEP PWM FREQUENCY (kHz) LOAD STATE DISCONNECT RECONNECT 50 DCIN = 15V DCIN = 20V DCIN = 24V 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 LOAD CURRENT = 1A, 2A, 3A DCIN = 20V DUTY CYCLE (VOUT/VIN) DCIN = 20V VFLOAT = 12.6V VFLOAT = 12.6V (3C4C = GND, CHEM = OPEN) 40071 G04 40071 G06 40071 G05
1A Load Step Battery Leakage Current vs (Battery Not Present) Battery Voltage
40 VDCIN = 0V 35 30 25 CHARGER CURRENT (500mA/DIV) 20 15 OUTPUT VOLTAGE (5V/DIV) 10 BATTERY LEAKAGE CURRENT (µA) 5 0 DCIN = 20V 0 5 10 15 20 25 30 VFLOAT = 12.6V BATTERY VOLTAGE (V) 40071 G07 40071 G08 40071fa For more information www.linear.com/LTC4007-1 5 Document Outline Description Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Application Related Parts
Typical perForMance characTerisTics INFET Response Time to Reverse Current Line Regulation VOUT vs IOUT
0.10 0 Vgs OF PFET (2V/DIV) 0.05 V –0.5 gs = 0 0 –1.0 –0.05 –1.5 –0.10 C3C4 = OPEN –2.0 Vs OF PFET (5V/DIV) –0.15 –2.5 ERROR (%) –0.20 C3C4 = GND –3.0 –0.25 V OUT –3.5 V –0.30 s = 0V –4.0 I –0.35 OUTPUT VOLTAGE ERROR (%) d (REVERSE) OF PFET (5A/DIV) –0.40 –4.5 3C4C = GND 3C4C = OPEN Id = 0A –0.45 –5.0 1.25µs/DIV 13 15 17 19 21 23 25 27 29 31 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 TEST PERFORMED ON DEMOBOARD VDCIN (V) OUTPUT CURRENT (A) VIN = 15VDC VCHARGE = 12.6V 40071 G02 40071 G03 CHARGER = ON PFET = 1/2 Si4925DY ICHARGE = <10mA 40071 G01
Disconnect/Reconnect Battery PWM Frequency vs Duty Cycle (Load Dump) 1A Load Step (Battery Present)
350 300 3A STEP CHARGER CURRENT (1A/DIV) 250 1A STEP 1A STEP VFLOAT 200 1V/DIV 150 PROGRAMMED CURRENT = 10% OUTPUT VOLTAGE (500mV/DIV) 100 3A STEP PWM FREQUENCY (kHz) LOAD STATE DISCONNECT RECONNECT 50 DCIN = 15V DCIN = 20V DCIN = 24V 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 LOAD CURRENT = 1A, 2A, 3A DCIN = 20V DUTY CYCLE (VOUT/VIN) DCIN = 20V VFLOAT = 12.6V VFLOAT = 12.6V (3C4C = GND, CHEM = OPEN) 40071 G04 40071 G06 40071 G05
1A Load Step Battery Leakage Current vs (Battery Not Present) Battery Voltage
40 VDCIN = 0V 35 30 25 CHARGER CURRENT (500mA/DIV) 20 15 OUTPUT VOLTAGE (5V/DIV) 10 BATTERY LEAKAGE CURRENT (µA) 5 0 DCIN = 20V 0 5 10 15 20 25 30 VFLOAT = 12.6V BATTERY VOLTAGE (V) 40071 G07 40071 G08 40071fa For more information www.linear.com/LTC4007-1 5 Document Outline Description Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Application Related Parts
