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ZXLD1370 Datasheet(PDF) 5 Page - Diodes Incorporated |
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ZXLD1370 Datasheet(HTML) 5 Page - Diodes Incorporated |
5 / 36 page ZXLD1370 ZXLD1370 Document number: DS32165 Rev. 4 - 2 5 of 36 www.diodes.com March 2011 © Diodes Incorporated A Product Line of Diodes Incorporated Electrical Characteristics (Test conditions: VIN = VAUX = 12V, TA = 25°C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Units Supply and reference parameters VUV- Under-Voltage detection threshold Normal operation to switch disabled VIN or VAUX falling 5.2 5.6 6.3 V VUV+ Under-Voltage detection threshold Switch disabled to normal operation VIN or VAUX rising 5.5 6 6.5 V IQ-IN Quiescent current into VIN PWM pin floating. Output not switching 1.5 3 mA IQ-AUX Quiescent current into VAUX 150 300 µA ISB-IN Standby current into VIN. PWM pin grounded for more than 15ms 90 150 µA ISB-AUX Standby current into VAUX. 0.7 10 µA VREF Internal reference voltage No load 1.237 1.25 1.263 V ΔVREF Change in reference voltage with output current Sourcing 1mA -5 mV Sinking 100 µA 5 VREF_LINE Reference voltage line regulation VIN = VAUX , 6.5V<VIN = <60V -60 -90 dB VREF-TC Reference temperature coefficient +/-50 ppm/°C DC-DC converter parameters VADJ External dc control voltage applied to ADJ pin to adjust output current (Note 8) DC brightness control mode 10% to 200% 0.125 1.25 2.5 V IADJ ADJ input current (Note 8) VADJ ≤ 2.5V VADJ = 5.0V † 100 5 nA µA VGI GI Voltage threshold for boost and buck- boost modes selection (Note 8) VADJ = 1.25V 0.8 V IGI GI input current (Note 8) VGI ≤ 2.5V VGI = 5.0V † 100 5 nA µA IPWM PWM input current VPWM = 5.5V 36 100 µA tPWMoff PWM pulse width (to enter shutdown state) PWM input low 10 15 25 ms TSDH Thermal shutdown upper threshold (GATE output forced low) Temperature rising. 150 ºC TSDL Thermal shutdown lower threshold (GATE output re-enabled) Temperature falling. 125 ºC High-Side Current Monitor (Pin ISM) IISM Input Current Measured into ISM pin and VISM = 12V 11 20 µA VSENSE_acc Accuracy of nominal VSENSE threshold voltage VADJ = 1.25V ±0.25 ±2 % VSENSE-OC Over-current sense threshold voltage 300 350 375 mV Notes: 8. The ADJ and GI pins have an internal clamp that limits the internal node to less than 3V. This provides some failsafe should those pins get overdriven. |
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