2. Scope of application of MNHX051R5S Military Point of Load DC to DC Converters (POL)

MNHX051R5S DC to DC Converters are used in aerospace high reliable electronic system.

3.Descriptions of MNHX051R5S Military Point of Load DC to DC Converters (POL)

MNHX051R5S DC to DC Converters use BUCK topological structure. Circuit contains input filter, PWM control, and reactive circuit and so on. Circuit also has protect function for over-current and under-voltage to improve the reliability.

This product is modular circuit structure; it’s used by PCB surface assembly process, no embedment, package is used by 2014 mucilage glue, gushing three proofing, copper shell.

4. Technical Specifications of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Form 2 Rated condition and recommended condition

Absolute max rating	Recommended condition
Input voltage：38V Output power：7.5W Storage temperature：-45～105℃ Leads resistance welding temperature（10s）：＜ 300℃ Junction temperature：＜ 150℃	Input voltage：9～38V working temperature  range（Tc）：-40～85℃

Form 3 Electrical Characteristic

No.	Characteristic	Symbol	Conditions	Limit value		Unit
			（otherwise specified，-40℃≤Tc≤85℃，VIN=16V±0.5V）	min	max
1	Input voltage	Vo	VI=7V-25V，Io=0.1A-1A	-5.1	-4.9	V
2	Output current	Io	VI=7V-25V	0.05	1	A
3	Output ripple voltage(peak-peak)	VP-P	TA=25℃，BW≤20MHz， full load	-	120	mV
4	Voltage regulation rate	Sv	full load ，VI=7V 25V	-	0.5	%
5	Load regulation rate	SI	Io=0.05A 0.1A	-	1	%
6	Efficiency	η	TA=25℃， full load	75	-	%

Output in parallel capacitance with 0～10μF.

5. Circuit block diagram of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig 2  Product elementary diagram

6. Typical characteristic curve of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig 3  Efficiency（output power）

7.MTBF curve of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Char 4  MTBF Temperature Curve
（Prediction is based on well grounded）

8. Pin Designation of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig  5 Upward view

Form 4  Pin Designation

No.	Symbol	Function
1	VI	Inputpositive
2	GND	Input Output common
3	Vo	Output 5V
4	GND C	Package common
5	GNDC	Package common

9.Typical Connection Diagram of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig  6  Electrical testing wiring diagram

10．Package Specifications of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig  7 package outline drawing（upward view）

Form 5  Package Outline

Symbol	Data/mm
	Min	Typical	Min
A	-	-	22.86
B	-	-	23.87
C	-	-	7.87
Ψd	0.47	-	0.73
ｅ1	-	2.54	-
ｅ2	-	5.08	-
ｅ3	-	11.4	-
ｅ4	-	25.4	-
F1	1.0	-	1.6
F1	0.1	-	0.7
L1	3.55	-	-
L2	1.15	-	1.75

Note: Size for a e1 e2 e3 e4 is guaranteed by manufacturing of packages, do not have inspection requirements.

11.Ordering Information of MNHX051R5S Military Point of Load DC to DC Converters (POL)

Fig 8 Ordering Information

Application Notes:

• The influence of external disturbance on the test accuracy should be avoided.
• The voltage detection point should be kept at the root of the pin of the testing product.
• Do not plug the product with electricity.
• Before power the testing product, you must confirm the polarity of the power supply to avoid damaging products by misconnection. At the same time, please ensure that the power supply voltage and load current does not exceed using limitation of the testing product.
• When using the shell temperature can not exceed the specified temperature, or to increase the use of heat sink.
• When ordering this device，the detailed electrical specifications shall be based on relevant standards.