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LTC4058XEDD-4.2 Datasheet(PDF) 6 Page - Linear Technology |
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LTC4058XEDD-4.2 Datasheet(HTML) 6 Page - Linear Technology |
6 / 12 page 6 LTC4058-4.2/LTC4058X-4.2 sn405842 405842fs PI FU CTIO S the voltage on this pin can be used to measure the charge current using the following formula: IBAT = (VPROG/RPROG) • 1000 This pin is clamped to approximately 2.4V. Driving this pin to voltages beyond the clamp voltage can draw currents as high as 1.5mA. VCC (Pin 6): Positive Input Supply Voltage. Provides power to the charger. VCC can range from 4.25V to 6.5V. This pin should be bypassed with at least a 1 µF capacitor. When VCC is within 100mV of the BSENSE pin voltage, the LTC4058 enters shutdown mode dropping the battery drain current to less than 2 µA. ACPR (Pin 7): Power Supply Status Open-Drain Output. When VCC is greater than the undervoltage lockout thresh- old and at least 100mV above VBSENSE, the ACPR pin is pulled to ground; otherwise, the pin is high impedance. EN (Pin 8): Enable Input . A logic high on the EN pin will put the LTC4058 into shutdown mode where the battery drain current is reduced to less than 2 µA and the supply current is reduced to less than 50 µA. A logic low or floating the EN pin (allowing an internal 2M Ω pull-down resistor to pull this pin low) enables charging. BLOCK DIAGRA – + – + 2 6 – + 120 °C TDIE TA MA CA C1 1 × 1000 × VA R1 BAT 1 BSENSE R2 R3 1V 0.1V R4 R5 PROG TRICKLE CHARGE DISABLED ON THE LTC4058X 5 µA RPROG REN REF 1.21V VCC CHRG 3 EN 8 GND 4, 9 405842 BD – + C2 2.9V TO BAT TERM ACPR CHARGE SHDN EN LOGIC ACPR 7 5 |
Similar Part No. - LTC4058XEDD-4.2 |
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Similar Description - LTC4058XEDD-4.2 |
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