HT7730

HT77xx PFM Asynchronous Step-up DC to DC Converter (100mA) Features · Low start-up voltage: 0.7V (Typ.), 0.9V (Max.) · Output current up to 100mA · High efficiency: 85% (Typ.), VOUT³2.7V · Ultra low supply current IDD2: 4mA (Typ.) · High output voltage accuracy: ±2.5% · Low ripple and low noise · Output voltage: 1.8V, 2.2V, 2.7V, 3.0V, 3.3V, 3.7V, · Low shutdown current: 0.5mA (Typ.) 5.0V · TO92, SOT89, SOT23 and SOT23-5 package Applications · Palmtops/PDAs · Cameras/Camcorders · Portable communicators/Smartphones · Battery-powered equipment General Description The HT77xx consists of an oscillator, a PFM control circuit, a driver transistor, a reference voltage unit, and a high speed comparator. They employ pulse frequency modulation (PFM) for minimum supply current and ripple at light output loading. These devices are available in space saving TO92, SOT89, SOT23 and SOT23-5 packages. For SOT23-5 package, it also build-in a chip enable function to reduce power consumption during shutdown mode. The HT77xx series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series features extremely low start-up voltage and high output voltage accuracy. They require only three external components to provide a fixed output voltage of 1.8V, 2.2V, 2.7V, 3.0V, 3.3V, 3.7V or 5.0V. CMOS technology ensures ultra low supply current and makes them ideal for battery-operated applications powered from one or more cells. Selection Table Note: Part No. Output Voltage HT7718 1.8V HT7722 2.2V HT7727 2.7V HT7730 3.0V HT7733 3.3V HT7737 3.7V HT7750 5.0V Package Marking TO92 SOT89 SOT23 SOT23-5 HT77xx (for TO92) HT77xx (for SOT89) 77xx (for SOT23) 77xx (for SOT23-5) ²XX² stands for output voltages. Rev 2.00 1 June 25, 2016 HT77xx Block Diagram V re f V O U T L X B u ffe r P F M C o n tro l O S C 1 1 5 k H z G N D C h ip E n a b le C E Pin Assignment S O T 8 9 T O 9 2 2 L X 5 V O U T 3 F r o n t V ie w 1 S O T 2 3 -5 S O T 2 3 G N D 4 3 T o p V ie w T o p V ie w G N D V O U T L X B o tto m 1 2 3 G N D V O U T L X G N D V O U T L X 1 2 1 2 3 G N D L X C E V O U T N C G N D L X C E V O U T N C V ie w Pin Description Pin No. Pin Name TO92 SOT89 SOT23 SOT23-5 ¾ ¾ ¾ 1 CE 2 2 3 2 VOUT ¾ ¾ ¾ 3 NC 1 1 1 4 GND 3 3 2 5 LX Description Chip enable pin, high active DC/DC converter output monitoring pin No connection Ground pin Switching pin Absolute Maximum Ratings Supply Voltage ..............................VSS-0.3V to VSS+7V Storage Temperature ............................-50°C to 125°C Operating Temperature ...........................-40°C to 85°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev 2.00 2 June 25, 2016 HT77xx Thermal Information Symbol Parameter qJA Thermal Resistance (Junction to Ambient) (Assume no ambient airflow, no heat sink) PD Package Max. Unit SOT89 300 °C/W TO92 300 °C/W SOT23 330 °C/W SOT23-5 320 °C/W SOT89 0.33 W TO92 0.33 W SOT23 0.3 W SOT23-5 0.31 W Power Dissipation Note: PD is measured at Ta= 25°C Electrical Characteristics Symbol Parameter VIN=VOUT´0.6; IOUT=10mA; Ta=25°C (Unless otherwise specified) Test Conditions Min. Typ. Max. Unit VIN Input Voltage ¾ ¾ ¾ 6 V DVOUT Output Voltage Tolerance ¾ -2.5 ¾ 2.5 % VSTART Start-up Voltage (Fig. 1) VIN: 0®2V; IOUT=1mA ¾ 0.7 0.9 V VHOLD Minimum Hold-on Voltage (Fig. 1) VIN: 2®0V; IOUT=1mA ¾ ¾ 0.7 V IIN No-load Input Current (Fig. 1) ¾ 10 20 mA VOUT=1.8V ¾ 35 50 VOUT=2.2V ¾ 37 55 VOUT=2.7V ¾ 40 60 VOUT=3.0V ¾ 45 68 VOUT=3.3V ¾ 55 81 VOUT=3.7V ¾ 64 85 VOUT=5.0V ¾ 85 134 IDD1 Supply Current 1 (Fig. 2) IOUT=0mA VS=VOUT´0.95 Measured at VOUT pin mA IDD2 Supply Current 2 (Fig. 2) VS=VOUT+0.5V Measured at VOUT pin ¾ 4 7 mA ISHDN Shutdown Current CE=GND ¾ 0.5 1 mA VIH CE High Threshold ¾ 2 ¾ ¾ V VIL CE Low Threshold ¾ ¾ ¾ 0.4 V ILEAK LX Leakage Current (Fig. 3) VS=VOUT+0.5V, VX=6V Measured at the LX pin ¾ ¾ 0.9 mA fOSC Maximum Oscillator Frequency (Fig. 3) VS=VOUT´0.95 Measured at LX pin ¾ 115 ¾ kHz DOSC Oscillator Duty Cycle (Fig. 3) VS=VOUT´0.95 Measured at LX pin 65 75 85 % h VOUT£2.2V ¾ 80 Efficiency ¾ VOUT³2.7V ¾ 85 ¾ Note: % Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. The guaranteed specifications apply only for the test conditions listed. Rev 2.00 3 June 25, 2016 HT77xx Test Circuit 1 N 5 8 1 7 1 0 0 m H V V IN 4 7 m F ( T a n ta lu m ) L X 1 0 0 m F ( T a n ta lu m ) V O U T H T 7 7 X X S e r ie s O U T V V O U T S V L X H T 7 7 X X S e r ie s V O U T S L X H T 7 7 X X S e r ie s G N D G N D G N D (F ig . 1 ) (F ig . 2 ) (F ig . 3 ) 1 0 0 W V X Typical Performance Characteristics 1 .9 0 1 .1 1 .0 S ta rt-u p 0 .9 0 .8 1 .8 0 V V 1 .7 5 IN = 1 .6 V V = 1 .0 8 V IN V IN In p u t V o lta g e ( V ) O u tp u t V o lta g e ( V ) 1 .8 5 = 1 .4 V IN = 1 .2 V 1 .7 0 0 .7 0 .6 0 .5 0 .4 0 .3 1 .6 5 0 .2 1 .6 0 0 .0 H o ld - o n 0 .1 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 2 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7718 Start-Up& Hold-On Voltage HT7718 Output Voltage v.s Output Current 9 0 % 1 .8 2 0 8 5 % V IN 1 .8 0 8 = 1 .6 V Io u t= 1 0 m A O u tp u t V o lta g e ( V ) E ffic ie n c y ( % ) 8 0 % 7 5 % V 7 0 % V IN IN = 1 .4 V = 1 .0 8 V 6 5 % V 6 0 % IN 1 .7 9 6 Io u t= 1 m A 1 .7 8 4 1 .7 7 2 = 1 .2 V 1 .7 6 0 5 5 % 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 -1 5 1 0 3 5 6 0 8 5 T e m p e ra tu re (° C ) O u tp u t C u rre n t (m A ) HT7718 Temperature v.s Output Voltage HT7718 Efficiency v.s Output Current Rev 2.00 -4 0 4 June 25, 2016 HT77xx 2 .2 2 2 .8 0 V 2 .1 8 V 2 .1 6 IN V IN IN 2 .7 5 = 2 .0 V = 1 .8 V O u tp u t V o lta g e ( V ) O u tp u t V o lta g e ( V ) 2 .2 0 = 1 .5 V 2 .1 4 V 2 .1 2 = 1 .2 V IN V 2 .7 0 V 2 .6 5 V = 1 .2 V = 2 .0 V V IN = 1 . 8 V = 1 .6 V IN 2 .6 0 2 .5 5 2 .1 0 2 .0 8 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 2 .5 0 1 4 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7722 Output Voltage v.s Output Current HT7727 Output Voltage v.s Output Current 9 0 9 0 V 8 0 V 7 0 V IN = 2 .0 V IN 8 5 = 1 .8 V IN V = 1 .5 V IN = 2 .0 V 8 0 V 5 0 IN E ffic ie n c y ( % ) 6 0 E ffic ie n c y ( % ) IN IN = 1 .2 V 4 0 V 7 5 V IN IN = 1 .8 V = 1 .6 V 7 0 V 3 0 IN = 1 .2 V 6 5 2 0 6 0 1 0 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 5 5 1 4 0 0 2 0 4 0 6 0 HT7722 Efficiency v.s Output Current 1 2 0 1 4 0 1 .0 0 .9 1 .0 S ta rt u p 0 .8 S ta rt u p 0 .8 In p u t V o lta g e ( V ) In p u t V o lta g e ( V ) 1 0 0 HT7727 Efficiency v.s Output Current 1 .2 0 .6 H o ld o n 0 .4 0 .7 0 .6 0 .5 H o ld o n 0 .4 0 .3 0 .2 0 .2 0 .0 8 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) 0 .1 0 .0 0 2 4 6 8 1 0 1 2 O u tp u t C u rre n t (m A ) 1 4 1 6 1 8 2 0 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 O u tp u t C u rre n t (m A ) HT7722 Start-Up& Hold-On Voltage HT7727 Start-Up& Hold-On Voltage 2 .7 1 0 Io u t= 1 0 m A O u tp u t V o lta g e ( V ) 2 .6 9 8 Io u t= 1 m A 2 .6 8 6 2 .6 7 4 2 .6 6 2 2 .6 5 0 -4 0 -1 5 1 0 3 5 6 0 8 5 T e m p e ra tu re (° C ) HT7727 Temperature v.s Output Voltage Rev 2.00 5 June 25, 2016 HT77xx 3 .4 3 .0 2 3 .0 0 V 2 .9 8 V 2 .9 4 IN V = 1 .2 V IN IN = 1 .8 V V 3 .2 = 1 .5 V 2 .9 2 2 .9 0 2 .8 8 V V IN = 1 .8 V = 1 .5 V 2 .7 2 .6 2 .8 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 2 .5 1 4 0 0 2 0 4 0 6 0 8 0 1 0 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7730 Output Voltage v.s Output Current 1 2 0 1 4 0 HT7733 Output Voltage v.s Output Current 9 0 8 5 V 8 0 V 7 5 V IN = 2 .0 V IN = 1 .8 V IN 8 5 = 1 .5 V 7 0 6 5 V IN V 8 0 E ffic ie n c y ( % ) E ffic ie n c y ( % ) IN 2 .8 2 .8 2 = 1 .2 V 6 0 V 7 5 V 7 0 V = 1 .2 V IN IN IN IN = 2 .0 V = 1 .8 V = 1 .5 V 6 5 6 0 5 5 5 5 0 2 0 4 0 6 0 8 0 1 0 0 O u tp u t C u rre n t (m A ) 1 2 0 5 0 1 4 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 O u tp u t C u rre n t (m A ) HT7730 Efficiency v.s Output Current HT7733 Efficiency v.s Output Current 1 .1 1 .0 1 .0 S ta rt u p 0 .9 S ta rt u p 0 .9 0 .8 0 .8 0 .7 In p u t V o lta g e ( V ) In p u t V o lta g e ( V ) V 2 .9 2 .8 4 0 .6 0 .5 H o ld o n 0 .4 0 .7 0 .6 0 .5 0 .4 0 .3 0 .3 0 .2 0 .2 0 .1 0 .1 0 .0 = 1 .2 V 3 .0 2 .8 6 5 0 IN = 2 .0 V IN 3 .1 O u tp u t V o lta g e ( V ) O u tp u t V o lta g e ( V ) 2 .9 6 3 .3 = 2 .0 V IN V 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 0 .0 2 0 H o ld o n 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 2 0 U T = 1 m A O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7730 Start-Up& Hold-On Voltage HT7733 Start-Up& Hold-On Voltage 3 .0 0 0 3 .3 2 0 Io u t= 1 0 m A 3 .3 1 2 Io u t= 1 m A O u tp u t V o lta g e ( V ) O u tp u t V o lta g e ( V ) 2 .9 9 8 2 .9 9 6 2 .9 9 4 2 .9 9 2 2 .9 9 0 IO U T = 1 0 m A IO 3 .3 0 4 3 .2 9 6 3 .2 8 8 -4 0 -1 5 1 0 3 5 6 0 3 .2 8 0 8 5 T e m p e ra tu re (° C ) -1 5 1 0 3 5 6 0 8 5 T e m p e ra tu re (° C ) HT7730 Temperature v.s Output Voltage Rev 2.00 -4 0 HT7733 Temperature v.s Output Voltage 6 June 25, 2016 HT77xx 4 .0 5 .5 3 .9 V 3 .7 3 .6 V O u tp u t V o lta g e ( V ) 3 .5 IN V = 1 .5 V IN = 2 .2 V V 3 .2 IN IN = 3 .0 V V 4 .5 3 .4 3 .3 V 5 .0 = 3 .0 V IN O u tp u t V o lta g e ( V ) 3 .8 = 1 .2 V 3 .1 3 .0 V 4 .0 V 3 .0 IN = 1 .2 V 2 .5 2 .8 2 .7 2 .0 2 .6 2 .5 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 .5 1 4 0 0 2 0 4 0 O u tp u t C u rre n t (m A ) 6 0 8 0 1 0 0 1 0 0 V 8 5 8 0 IN = 3 .0 V IN = 2 .2 V IN = 1 .5 V V 9 0 V V E ffic ie n c y ( % ) E ffic ie n c y ( % ) 7 0 6 5 V 6 0 = 1 .2 V IN V 7 0 6 0 V IN IN = 2 .0 V V IN = 1 .5 V = 1 .2 V 5 0 5 5 4 0 5 0 3 0 4 5 2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 0 1 4 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7750 Efficiency v.s Output Current HT7737 Efficiency v.s Output Current 1 .8 1 .1 1 .6 1 .0 S ta rt u p 0 .9 1 .4 In p u t V o lta g e ( V ) 0 .8 In p u t V o lta g e ( V ) = 3 .0 V IN 8 0 7 5 0 .7 0 .6 0 .5 H o ld o n 0 .4 0 .3 1 .2 S ta rt u p 1 .0 0 .8 0 .6 0 .4 0 .2 H o ld o n 0 .2 0 .1 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 0 .0 2 0 0 2 4 6 8 1 0 1 2 1 4 1 6 1 8 2 0 O u tp u t C u rre n t (m A ) O u tp u t C u rre n t (m A ) HT7737 Start-Up& Hold-On Voltage HT7750 Start-Up& Hold-On Voltage 3 .7 4 0 5 .0 0 3 .7 2 8 4 .9 9 Io u t= 1 0 m A Io u t= 1 m A Io u t= 1 m A Io u t= 1 0 m A O u tp u t V o lta g e ( V ) O u tp u t V o lta g e ( V ) 1 4 0 HT7750 Output Voltage v.s Output Current 9 0 4 0 1 2 0 O u tp u t C u rre n t (m A ) HT7737 Output Voltage v.s Output Current 3 .7 1 6 3 .7 0 4 3 .6 9 2 3 .6 8 0 = 2 .0 V 3 .5 2 .9 0 .0 IN = 1 .5 V IN 4 .9 8 4 .9 7 4 .9 6 -4 0 -1 5 1 0 3 5 6 0 4 .9 5 8 5 T e m p e ra tu re (° C ) -1 5 1 0 3 5 6 0 8 5 T e m p e ra tu re (° C ) HT7737 Temperature v.s Output Voltage Rev 2.00 -4 0 HT7750 Temperature v.s Output Voltage 7 June 25, 2016 HT77xx HT7730 Load Transient Response (L=100mH, COUT=100mF, VIN=1.8V) HT7718 Load Transient Response (L=100mH, COUT=100mF, VIN=1.08V) HT7733 Load Transient Response (L=100mH, COUT=100mF, VIN=1.98V) HT7722 Load Transient Response (L=100mH, COUT=100mF, VIN=1.08V) HT7727 Load Transient Response (L=100mH, COUT=100mF, VIN=1.62V) Rev 2.00 HT7737 Load Transient Response (L=100mH, COUT=100mF, VIN=2.22V) 8 June 25, 2016 HT77xx V O U T 5 0 m V /d iv V 2 0 m V /d iv O U T 5 0 m A V L o a d S te p IN 1 V /d iv 2 0 m A /d iv HT7750 Load Transient Response (L=100mH, COUT=100mF, VIN=3V) HT7733 Line Transient Response (L=100mH, COUT=100mF) V 2 0 m V /d iv O U T V IN 1 V /d iv HT7722 Line Transient Response (L=100mH, COUT=100mF) Rev 2.00 HT7750 Line Transient Response (L=100mH, COUT=100mF) 9 June 25, 2016 HT77xx Application Circuits Without CE Pin G S 5 4 -1 0 1 K G a n g S o n g E le c tr o n ic s C o ., L td . 1 0 0 m H V 1 N 5 8 1 7 V IN 4 7 m F ( T a n ta lu m ) L X H T 7 7 x x S e r ie s V O U T O U T 1 0 0 m F ( T a n ta lu m ) G N D With CE Pin G S 5 4 -1 0 1 K G a n g S o n g E le c tr o n ic s C o ., L td . 1 0 0 m H V 1 N 5 8 1 7 V IN 4 7 m F ( T a n ta lu m ) L X H T 7 7 x x S e r ie s C E G S 5 4 -1 0 1 K G a n g S o n g E le c tr o n ic s C o ., L td . 1 0 0 m H V 1 0 0 m F ( T a n ta lu m ) G N D 1 N 5 8 1 7 V IN 4 7 m F ( T a n ta lu m ) L X H T 7 7 x x S e r ie s C E Note: V O U T O U T V O U T O U T 1 0 0 m F ( T a n ta lu m ) G N D For the SOT23-5 package, when CE is pulled low, the internal blocks of the device, such as the reference band gap, gain block, and all feedback and control circuitry will be switched off. The boost converter¢s output, VOUT, will be at a value one Schottky diode voltage drop below the input voltage and the LX pin remains in a high impedance condition. The output capacitor and load at VOUT determine the rate at which VOUT decays. Rev 2.00 10 June 25, 2016 HT77xx Package Information Note that the package information provided here is for consultation purposes only. As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the Package/Carton Information. Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be transferred to the relevant website page. • Package Information (include Outline Dimensions, Product Tape and Reel Specifications) • The Operation Instruction of Packing Materials • Carton information Rev 2.00 11 June 25, 2016 HT77xx 3-pin TO92 Outline Dimensions A B D C E F G H Symbol Nom. Max. A 0.173 0.180 0.205 B 0.170 ¾ 0.210 C 0.500 0.580 ¾ D ¾ 0.015 Typ ¾ E ¾ 0.010 Typ ¾ F ¾ 0.050 Typ ¾ G ¾ 0.035 Typ ¾ H 0.125 0.142 0.165 Symbol A Rev 2.00 Dimensions in inch Min. Dimensions in mm Min. Nom. Max. 4.39 4.57 5.21 B 4.32 ¾ 5.33 C 12.70 14.73 ¾ D ¾ 0.38 Typ ¾ E ¾ 2.54 Typ ¾ F ¾ 1.27 Typ ¾ G ¾ 0.89 Typ ¾ H 3.18 3.61 4.19 12 June 25, 2016 HT77xx 3-pin SOT89 Outline Dimensions I A J B C E D G F Symbol Dimensions in inch Min. Nom. Max. A 0.173 ¾ 0.181 B 0.053 ¾ 0.072 C 0.090 ¾ 0.102 D 0.035 ¾ 0.047 E 0.155 ¾ 0.167 F 0.014 ¾ 0.019 G 0.017 ¾ 0.022 H ¾ 0.059 BSC ¾ I 0.055 ¾ 0.063 J 0.014 ¾ 0.017 Symbol A Rev 2.00 H Dimensions in mm Min. Nom. Max. 4.40 ¾ 4.60 B 1.35 ¾ 1.83 C 2.29 ¾ 2.60 D 0.89 ¾ 1.20 E 3.94 ¾ 4.25 F 0.36 ¾ 0.48 G 0.44 ¾ 0.56 H ¾ 1.50 BSC ¾ I 1.40 ¾ 1.60 J 0.35 ¾ 0.44 13 June 25, 2016 HT77xx 3-pin SOT23-3 Outline Dimensions D C L H E q e A A 2 b Symbol A Dimensions in inch Min. Nom. Max. ¾ ¾ 0.057 A1 ¾ ¾ 0.006 A2 0.035 0.045 0.051 b 0.012 ¾ 0.020 C 0.003 ¾ 0.009 D ¾ 0.114 BSC ¾ E ¾ 0.063 BSC ¾ e ¾ 0.037 BSC ¾ H ¾ 0.075 BSC ¾ L ¾ 0.110 BSC ¾ L1 ¾ 0.024 BSC ¾ q 0° ¾ 8° Symbol A Rev 2.00 A 1 Dimensions in mm Min. Nom. Max. ¾ ¾ 1.45 A1 ¾ ¾ 0.15 A2 0.90 1.15 1.30 b 0.30 ¾ 0.50 C 0.08 ¾ 0.22 D ¾ 2.90 BSC ¾ E ¾ 1.60 BSC ¾ e ¾ 0.95 BSC ¾ H ¾ 1.90 BSC ¾ L ¾ 2.80 BSC ¾ L1 ¾ 0.60 BSC ¾ q 0° ¾ 8° 14 June 25, 2016 HT77xx 5-pin SOT23-5 Outline Dimensions Symbol A Min. Nom. Max. ¾ ¾ 0.057 A1 ¾ ¾ 0.006 A2 0.035 0.045 0.051 b 0.012 ¾ 0.020 C 0.003 ¾ 0.009 D ¾ 0.114 BSC ¾ E ¾ 0.063 BSC ¾ e ¾ 0.037 BSC ¾ H ¾ 0.075 BSC ¾ L ¾ 0.110 BSC ¾ L1 ¾ 0.024 BSC ¾ q 0° ¾ 8° Symbol A Rev 2.00 Dimensions in inch Dimensions in mm Min. Nom. Max. ¾ ¾ 1.45 A1 ¾ ¾ 0.15 A2 0.90 1.15 1.30 b 0.30 ¾ 0.50 C 0.08 ¾ 0.22 D ¾ 2.90 BSC ¾ E ¾ 1.60 BSC ¾ e ¾ 0.95 BSC ¾ H ¾ 1.90 BSC ¾ L ¾ 2.80 BSC ¾ L1 ¾ 0.60 BSC ¾ q 0° ¾ 8° 15 June 25, 2016 HT77xx Copyright Ó 2016 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev 2.00 17 June 25, 2016