Datasheet LT1510, LT1510-5 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | Constant-Voltage/Constant-Current Battery Charger |
| Páginas / Página | 16 / 3 |
| Formato / tamaño de archivo | PDF / 297 Kb |
| Idioma del documento | Inglés |
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LT1510/LT1510-5
ELECTRICAL CHARACTERISTICS VCC = 16V, VBAT = 8V, VMAX (maximum operating VCC) = 28V, no load on any outputs, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall
Minimum Input Operating Voltage Undervoltage Lockout ● 6.2 7 7.8 V Reverse Current from Battery (When VCC Is Not VBAT ≤ 20V, 0°C ≤ TJ ≤ 70°C ● 3 15 µA Connected, VSW Is Floating) Boost Pin Current VCC – VBOOST ≤ 20V ● 0.10 20 µA 20V < VCC – VBOOST ≤ 28V ● 0.25 30 µA 2V ≤ VBOOST – VCC ≤ 8V (Switch ON) ● 6 11 mA 8V < VBOOST – VCC ≤ 25V (Switch ON) ● 8 14 mA
Switch
Switch ON Resistance VCC = 10V ISW = 1.5A, VBOOST – VSW ≥ 2V (Note 4) ● 0.3 0.5 Ω ISW = 1A, VBOOST – VSW < 2V (Unboosted) ● 2.0 Ω ∆IBOOST/∆ISW During Switch ON VBOOST = 24V, ISW ≤ 1A 20 35 mA/A Switch OFF Leakage Current VSW = 0V, VCC ≤ 20V ● 2 100 µA 20V < VCC ≤ 28V ● 4 200 µA Maximum VBAT with Switch ON ● VCC – 2 V Minimum IPROG for Switch ON 2 4 20 µA Minimum IPROG for Switch OFF at VPROG ≤ 1V ● 1 2.4 mA
Current Sense Amplifier Inputs (SENSE, BAT)
Sense Resistance (RS1) 0.08 0.12 Ω Total Resistance from SENSE to BAT (Note 3) 0.2 0.25 Ω BAT Bias Current (Note 5) VC < 0.3V – 200 – 375 µA VC > 0.6V 700 1300 µA Input Common Mode Limit (Low) ● – 0.25 V Input Common Mode Limit (High) ● VCC – 2 V
Reference
Reference Voltage (Note 1) S8 Package RPROG = 4.93k, Measured at PROG Pin ● 2.415 2.465 2.515 V Reference Voltage (Note 2) 16-Pin RPROG = 3.28k, Measured at OVP with 2.453 2.465 2.477 V VA Supplying IPROG and Switch OFF Reference Voltage Tolerance, 16-Pin Only 8V ≤ VCC ≤ 28V, 0°C ≤ TJ ≤ 70°C ● 2.446 2.465 2.480 V 8V ≤ VCC ≤ 28V, 0°C ≤ TJ ≤ 125°C ● 2.441 2.489 V 8V ≤ VCC ≤ 28V, TJ < 0°C ● 2.430 2.489 V
Oscillator
Switching Frequency LT1510 180 200 220 kHz LT1510-5 440 500 550 kHz Switching Frequency Tolerance All Conditions of VCC, Temperature, LT1510 ● 170 200 230 kHz LT1510, TJ < 0°C ● 160 230 kHz LT1510-5 ● 425 500 575 kHz LT1510-5, TJ < 0°C ● 400 575 kHz Maximum Duty Cycle LT1510 ● 87 % LT1510, TA = 25°C (Note 8) 90 93 % LT1510-5 (Note 9) ● 77 81 % 3
ELECTRICAL CHARACTERISTICS VCC = 16V, VBAT = 8V, VMAX (maximum operating VCC) = 28V, no load on any outputs, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall
Minimum Input Operating Voltage Undervoltage Lockout ● 6.2 7 7.8 V Reverse Current from Battery (When VCC Is Not VBAT ≤ 20V, 0°C ≤ TJ ≤ 70°C ● 3 15 µA Connected, VSW Is Floating) Boost Pin Current VCC – VBOOST ≤ 20V ● 0.10 20 µA 20V < VCC – VBOOST ≤ 28V ● 0.25 30 µA 2V ≤ VBOOST – VCC ≤ 8V (Switch ON) ● 6 11 mA 8V < VBOOST – VCC ≤ 25V (Switch ON) ● 8 14 mA
Switch
Switch ON Resistance VCC = 10V ISW = 1.5A, VBOOST – VSW ≥ 2V (Note 4) ● 0.3 0.5 Ω ISW = 1A, VBOOST – VSW < 2V (Unboosted) ● 2.0 Ω ∆IBOOST/∆ISW During Switch ON VBOOST = 24V, ISW ≤ 1A 20 35 mA/A Switch OFF Leakage Current VSW = 0V, VCC ≤ 20V ● 2 100 µA 20V < VCC ≤ 28V ● 4 200 µA Maximum VBAT with Switch ON ● VCC – 2 V Minimum IPROG for Switch ON 2 4 20 µA Minimum IPROG for Switch OFF at VPROG ≤ 1V ● 1 2.4 mA
Current Sense Amplifier Inputs (SENSE, BAT)
Sense Resistance (RS1) 0.08 0.12 Ω Total Resistance from SENSE to BAT (Note 3) 0.2 0.25 Ω BAT Bias Current (Note 5) VC < 0.3V – 200 – 375 µA VC > 0.6V 700 1300 µA Input Common Mode Limit (Low) ● – 0.25 V Input Common Mode Limit (High) ● VCC – 2 V
Reference
Reference Voltage (Note 1) S8 Package RPROG = 4.93k, Measured at PROG Pin ● 2.415 2.465 2.515 V Reference Voltage (Note 2) 16-Pin RPROG = 3.28k, Measured at OVP with 2.453 2.465 2.477 V VA Supplying IPROG and Switch OFF Reference Voltage Tolerance, 16-Pin Only 8V ≤ VCC ≤ 28V, 0°C ≤ TJ ≤ 70°C ● 2.446 2.465 2.480 V 8V ≤ VCC ≤ 28V, 0°C ≤ TJ ≤ 125°C ● 2.441 2.489 V 8V ≤ VCC ≤ 28V, TJ < 0°C ● 2.430 2.489 V
Oscillator
Switching Frequency LT1510 180 200 220 kHz LT1510-5 440 500 550 kHz Switching Frequency Tolerance All Conditions of VCC, Temperature, LT1510 ● 170 200 230 kHz LT1510, TJ < 0°C ● 160 230 kHz LT1510-5 ● 425 500 575 kHz LT1510-5, TJ < 0°C ● 400 575 kHz Maximum Duty Cycle LT1510 ● 87 % LT1510, TA = 25°C (Note 8) 90 93 % LT1510-5 (Note 9) ● 77 81 % 3