Datasheet HT7521-1 (Holtek) - 8

HT75xx-1 30V, 100mA Low Power LDO HT7541-1, +4.15V Output Type
Ta=25°C
Test Conditions Symbol Parameter Min. Typ. Max. Unit Conditions
VIN Input Voltage — — — 30 V VOUT Output Voltage VIN=6.15V, IOUT=10mA 4.025 4.150 4.274 V IOUT Output Current VIN=6.15V 70 100 — mA ∆VOUT Load Regulation VIN=6.15V, 1mA≤IOUT≤50mA — 25 60 mV VDIF Dropout Voltage (Note) IOUT=1mA, ∆VOUT=2% — 25 55 mV ISS Quiescent Current No load — 2.5 4.0 μA Line Regulation 5.15V≤V IN≤30V, IOUT=1mA — — 0.2 %/V Temperature Coefficient I OUT=10mA, -40°C<Ta<85°C — 100 — ppm/°C Note: Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at VIN= VOUT+2V with a fixed load.
HT7544-1, +4.4V Output Type
Ta=25°C
Test Conditions Symbol Parameter Min. Typ. Max. Unit Conditions
VIN Input Voltage — — — 30 V VOUT Output Voltage VIN=6.4V, IOUT=10mA 4.268 4.400 4.532 V IOUT Output Current VIN=6.4V 70 100 — mA ∆VOUT Load Regulation VIN=6.4V, 1mA≤IOUT≤50mA — 25 60 mV VDIF Dropout Voltage (Note) IOUT=1mA, ∆VOUT=2% — 25 55 mV ISS Quiescent Current No load — 2.5 4.0 μA Line Regulation 5.4V≤V IN≤30V, IOUT=1mA — — 0.2 %/V Temperature Coefficient I OUT=10mA, -40°C<Ta<85°C — 100 — ppm/°C Note: Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at VIN= VOUT+2V with a fixed load.
HT7550-1, +5.0V Output Type
Ta=25°C
Test Conditions Symbol Parameter Min. Typ. Max. Unit Conditions
VIN Input Voltage — — — 30 V VOUT Output Voltage VIN=7.0V, IOUT=10mA 4.850 5.000 5.150 V IOUT Output Current VIN=7.0V 100 150 — mA ∆VOUT Load Regulation VIN=7.0V, 1mA≤IOUT≤70mA — 25 60 mV VDIF Dropout Voltage (Note) IOUT=1mA, ∆VOUT=2% — 25 55 mV ISS Quiescent Current No load — 2.5 4.0 μA Line Regulation 6.0V≤V IN≤30V, IOUT=1mA — — 0.2 %/V Temperature Coefficient I OUT=10mA, -40°C<Ta<85°C — 100 — ppm/°C Note: Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at VIN= VOUT+2V with a fixed load. Rev. 2.81 8 December 03, 2025 Document Outline Features Applications General Description Selection Table Block Diagram Pin Assignment AbsolutemAximum Ratings Thermal Information Pin Descriptions Electrical Characteristics HT7521-1, +2.1V Output Type HT7523-1, +2.3V Output Type HT7525-1, +2.5V Output Type HT7527-1, +2.7V Output Type HT7530-1, +3.0V Output Type HT7533-1, +3.3V Output Type HT7536-1, +3.6V Output Type HT7540-1, +4.0V Output Type HT7541-1, +4.15V Output Type HT7544-1, +4.4V Output Type HT7550-1, +5.0V Output Type HT7560-1, +6.0V Output Type HT7570-1, +7.0V Output Type HT7580-1, +8.0V Output Type HT7590-1, +9.0V Output Type HT75A0-1, +10.0V Output Type HT75C0-1, +12.0V Output Type Typical Performance Characteristics Application Circuits Basic Circuit High Output Current Positive Voltage Regulator Short-Circuit Protection for Tr1 Circuit for Increasing Output Voltage Circuit for Increasing Output Voltage Constant Current Regulator Dual Supply Package Information 3-pin SOT89 Outline Dimensions 5-pin SOT23 Outline Dimensions