3.3V,5V Low Voltage Difference Linear DC to DC converters（LDO）

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Output Voltage (V) : 3.3V,5V
Input DC Voltage (V) : （Vout+1）V

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1 Absolute maximum rated of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Pulse input voltageVINP
(Positive pulse width 100ms，positive duty cycle 1%) … -20V～60V
Input voltageVIN …………………………………………………… 26V
Enable input voltageVEN…………………………………………-0.3V～26V
Maximum output current……………………………………………3.5A
Storage temperature Tstg …………………………………-65℃～150℃
Lead welding temperature(10s)Th …………………………… 300℃
Junction temperatureTj…………………………………………… 175℃
Thermal resistanceR(th)J-C …………………………………………5.7℃/W
Power consumption PD（Without heat sink） ……………………… 200mW

2 Recommended operating conditions of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Input voltage VIN………………………………………………… (VOUT+1)V
Operating temperature TC ………………………………………-55℃～125℃
Enable input voltage high level VEn（H） ……………………… ≥2.4V
Enable input voltage low level VEn（L） ……………………… ≤0.8V

3 Package Specifications of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Unit:mm

Symbols	Data
Symbols	Minimum	Typical	Maxim
A	-	-	3.0
D	-	-	6.8
E	-	-	6.8
L	1.0	-	-
b	0.30	0.4	0.5
c	-	0.15	0.25
e	-	1.27	-

Fig 1 HSK5101 Package outline drawing

4 Pin Designations of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Pin	Symbol	Designation	Pin	Symbol	Designation
1	NC	NC	6	VOUT	Output
2	EN	Enable	7	VOUT	Output
3	VIN	Input	8	VOUT	Output
4	VIN	Input	9	NC	NC
5	NC	NC	10	Flag	Flag
			Base	GND	GND

Fig2 HSK5101 Pin Designations

5 Ordering Information of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Part number contains the use of the production process, serial number, output voltage, quality level and other information. As shown below：
Ordering Information

6 Technical Specifications of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Table 1a HSK5101-3.3 Electrical characteristics

Items	Symbol	Condition (Unless otherwise specified，VEn(H)≥2.4V， VEn(L)≤0.8V，-55℃≤TA≤125℃)	A Group	Limited value		Unit
Items	Symbol		A Group	Min	Max	Unit
Output voltage	VOUT	IOUT=1A，VIN=4.3V，VEn=VIN	1	3.267	3.333	V
Output voltage	VOUT	IOUT=1A，VIN=4.3V，VEn=VIN	2, 3	3.234	3.366	V
Input and output voltage difference	VDO	TA=25℃，VEn=VIN；△VOUT=-1%；IOUT=100mA	1	－	200	mV
Input and output voltage difference	VDO	TA=25℃，VEn=VIN；△VOUT=-1%；IOUT=1.5A	1	－	600	mV
Static（ground）current	IQ	TA=25℃，VEn=VIN；VIN=4.3V，IOUT=0.75A	1	－	20	mA
Static（ground）current	IQ	TA=25℃，VEn=VIN；VIN=4.3V，IOUT=1.5A	1	－	40	mA
Load regulation	SI	IOUT=10mA→1.25A，VIN=4.3V，VEn=VIN	1	－	1	%
Load regulation	SI	IOUT=10mA→1.25A，VIN=4.3V，VEn=VIN	2, 3	－	2	%
Voltage regulation	SV	VIN=4.3V→26V，IOUT =10mA，VEn=VIN	1	－	0.5	%
Voltage regulation	SV	VIN=4.3V→26V，IOUT =10mA，VEn=VIN	2, 3	－	1	%
Output noise voltage	VN	TA=25℃，VEn=VIN；CL=22μF～30μF； IOUT =10mA，f≤300KHz	4	－	250	μV
Shutoff output current	IOSD	TA=25℃；VEn=0V	4	－	50	μA
Enable input high level	VEN(H)	TA=25℃；VIN=4.3V，IOUT=100mA	1	2.4	－	V
Enable input low level	VEN(L)	TA=25℃；VIN=4.3V，IOUT=100mA	1	－	0.8	V
Enable high level input current	IEN(H)	TA=25℃，VEn=VIN；VIN=4.3V，IOUT=100mA	1	－	600	μA
Enable low level input current	IEN(L)	TA=25℃；VEn=0V；VIN=4.3V，IOUT=100mA	1	－	2	μA
Flag output turn on voltage	VFO	TA=25℃；VIN=VOUT-1.0V，IOF≤250μA；output no load	1	－	0.4	V
Flag output turn off current	IF(off)	TA=25℃；VIN=VOUT+1V；output no load	1	－	2	μA
Output current limit	ILIM	TA=25℃；VIN=4.3V	4	－	6.5	A

Table 1b HSK5101-5.0 Electrical characteristics

Items	Symbol	Condition (Unless otherwise specified，VEn(H)≥2.4V， VEn(L)≤0.8V，-55℃≤TA≤125℃)	A Group	Limited value		Unit
Items	Symbol		A Group	Min	Max	Unit
Output voltage	VOUT	IOUT=1A， VIN=6.0V	1	4.95	5.05	V
Output voltage	VOUT	IOUT=1A， VIN=6.0V	2,3	4.90	5.10	V
Input and output voltage difference	VDO	TA=25℃；△VOUT=-1%；IOUT=100mA	1	－	250	mV
Input and output voltage difference	VDO	TA=25℃；△VOUT=-1%；IOUT=1.5A	1	－	600	mV
Static（ground）current	IQ	TA=25℃；VIN=6.0V，IOUT=0.75A	1	－	30	mA
Static（ground）current	IQ	TA=25℃；VIN=6.0V，IOUT=1.5A	1	－	40	mA
Load regulation	SI	IOUT=10mA→1.25A，VIN=6.0V	1	－	1	%
Load regulation	SI	IOUT=10mA→1.25A，VIN=6.0V	2,3	－	2	%
Voltage regulation	SV	VIN=6.0V→26V，IOUT=10mA	1	－	0.5	%
Voltage regulation	SV	VIN=6.0V→26V，IOUT=10mA	2,3	－	1	%
Output noise voltage	VN	TA=25℃，VEn=VIN；CL=22μF～30μF； IOUT =10mA，f≤300KHz	4	－	350	μV
Shutoff output current	IOSD	TA=25℃；VEn=0V	4	－	50	μA
Enable input high level	VEN(H)	TA=25℃；VIN=6.0V，IOUT=100mA	1	2.4	－	V
Enable input low level	VEN(L)	TA=25℃；VIN=6.0V，IOUT=100mA	1	－	0.8	V
Enable high level input current	IEN(H)	TA=25℃，VEn=VIN；VIN=6.0V，IOUT=100mA	1	－	600	μA
Enable low level input current	IEN(L)	TA=25℃；VEn=0V；VIN=6.0V，IOUT=100mA	1	－	2	μA
Flag output turn on voltage	VFO	TA=25℃；VIN=VOUT-2V，IOF≤250μA； output no load	1	－	0.4	V
Flag output turn off current	IF(off)	TA=25℃；VIN=VOUT+1V；output no load	1	－	2	μA
Output current limit	ILIM	TA=25℃；VIN=6.0V	4	－	6.5	A

7 Typical Connection Diagram of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

Fig 3 HSK5101 Electrical test line connection diagram

8 Application Notes of HSK5101 Series Low Voltage Difference Linear DC to DC converter（LDO）

☆ The electronic inspecton point should be kept as close as possible at the root of the pin；
☆ It is strictly forbidden to bend the pins；
☆ To prevent the application of two or more absolute maximum ratings on the device at the same time；
☆ To prevent the device from falling off；
☆ To prevent the output and ground short circuit；
☆ To prevent the device from being reversed or dislocated；
☆ During assembly, the bottom of the product should be attached as close as possible to the circuit board to avoid damage to the pin, take shockproof measures for necessary ；
☆ Focus on device power consumption, the power consumption

,When the input/output voltage difference（VIN-VOUT） is large, output current IO should be smaller；When the input/output voltage difference（VIN-VOUT）is small ，output current IO should be larger； When the device power consumption is large, be sure to configure the appropriate heat sink to prevent the device damaged due to overheating or into the overheating protection status；
☆ Both positive and negative terminals of power supply shall be correctly connected when power is applied so as to avoid permanent damage to the device.；
☆ Anti-static measures should be taken during storage and transportation.

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