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XR76121 Datasheet(PDF) 2 Page - Exar Corporation |
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XR76121 Datasheet(HTML) 2 Page - Exar Corporation |
2 / 18 page XR 76121 2/18 REV1A Absolute Maximum Ratings These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. Exposure to any absolute maximum rating condition for extended periods may affect device reliability and lifetime. PVIN, VIN.........................................................................-0.3V to 25V VCC ..................................................................................-0.3V to 6.0V BST................................................................-0.3V to 31V(1) BST-SW............................................................. -0.3V to 6V SW, ILIM........................................................ -1V to 25V(1)(2) All other pins......................................... -0.3V to VCC + 0.3V Storage temperature.................................... -65°C to 150°C Junction temperature................................................. 150°C Power dissipation ...................................... Internally limited Lead temperature (soldering, 10 second).................. 300°C ESD rating (HBM – human body model) ....................... 2kV ESD rating (CDM – charged device model) .................. 1kV ESD rating (MM – machine model) ............................. 200V Operating Conditions PVIN......................................................................3V to 22V VIN .....................................................................4.5V to 22V VCC...................................................................4.5V to 5.5V SW, ILIM ..........................................................-1V to 22V(2) PGOOD, TON, SS, EN.................................-0.3V to 5.5V(2) Switching frequency ................................... 200kHz-1MHz(3) Junction temperature range (TJ).................. -40°C to 125°C Package power dissipation max at 25°C..................... 4.1W Package thermal resistance θJA ....................................24°C/W(4) NOTES: 1. No external voltage applied. 2. SW pin’s DC range is -1V, transient is -5V for less than 50ns. 3. Recommended. 4. Measured on Exar evaluation board. Electrical Characteristics Specifications are for operating junction temperature of TJ = 25°C only; limits applying over the full operating junction temperature range are denoted by a •. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise indicated, VIN = 12V, SW = AGND = PGND = 0V, CVCC = 4.7uF. Symbol Parameter Conditions • Min Typ Max Units Power Supply Characteristics VIN Input voltage range VCC regulating • 5 12 22 V VCC tied to VIN 4.5 5.0 5.5 IVIN VIN supply current Not switching, VIN = 12V, VFB = 0.7V • 0.8 1.3 mA IVCC VCC quiescent current Not switching, VCC = VIN = 5V, VFB = 0.7V • 0.8 1.3 mA IVIN VIN supply current f = 600kHz, RON = 49.9k, VFB = 0.58V 17 mA IOFF Shutdown current Enable = 0V, PVIN = VIN = 12V 1 μA Enable and Undervoltage Lock-Out UVLO VIH_EN EN pin rising threshold • 1.8 1.9 2.0 V VEN_HYS EN pin hysteresis 60 mV VCC UVLO start threshold, rising edge • 4.00 4.25 4.40 V VCC UVLO hysteresis • 100 170 mV |
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