Series: -
Function: Charge Management
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Packaging: Tube
Battery Chemistry: Multi-Chemistry
Manufacturer: Linear Technology
Voltage - Supply: 6 V ~ 28 V
Package / Case: 20-SSOP (0.154", 3.90mm Width)
Supplier Device Package: 20-SSOP
Features: SpecificationsDescriptionThe LTC4008EGN is designed as one kind of constant-current/constant-voltage charger controller.The PWM controller uses a synchronous,quasi-constant frequency, constant off-time architecture that will not generate audible noise even when using ceramic capacitors.Charging current is programmable with a sense resistor and programming resistor to ±4% typical accuracy.Charging current can be monitored as a voltage across the programming resistor.An external resistor divider and precision internal reference set the final float voltage.
The LTC4008EGN has some features such as:(1)general purpose charger controller;(2)high conversion efficiency:Up to 96%;(3)output currents exceeding 4A;(4)±0.8% voltage accuracy;(5)AC adapter current limiting maximizes charge rate;(6)thermistor input for temperature qualified charging;(7)wide input voltage range:6V to 28V;(8)wide output voltage:3V to 28V;(9)0.5V dropout voltage;maximum duty cycle: 98%;(10)programmable charge current:±4% accuracy;(11)indicator outputs for charging,C/10 current detection,AC adapter present,input current limiting and faults;(12)charging current monitor output.It can be used in notebook computers,portable instruments and battery Backup systems.
The absolute maximum ratings of the LTC4008EGN can be summarized as:(1)voltage from DCIN,CLP,CLN to GND:+32V/-0.3 V;(2)PGND with respect to GND:±0.3V;(3)CSP,BAT to GND:+28V/-0.3V;(4)NTC:+10V/-0.3V;(5)CLP to CLN:+0.5V;(6)operating ambient temperature range:40°C to 85°C;(7)operating junction temperature:40°C to 125°C;(8)operating junction temperature:40°C to 125°C;(9)lead temperature:300°C.
Parameters: | Technical/Catalog Information | LTC4008EGN |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Battery Type | Multi-Chemistry |
| Function | Charge Management |
| Package / Case | 20-SSOP |
| Packaging | Tube |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 6 V ~ 28 V |
| Drawing Number | 161; 05-08-1641; GN; 16 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LTC4008EGN
LTC4008EGN
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LTC4008EGN Data Sheet
