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Single Output DC/DC Converter
FEATURES: 3 Pin SIP Package Pin-out compatible with LM78XX Linear Regulators Continuous Short Circuit Protection Non-Isolated Regulated Output Operating temperature -40°C to +85°C Wide input range Very High Efficiency Up To 95% Low ripple and noise
Series M-78B-NZ
Up to 9.75 Watt | DC-DC Converter
Models
Model Input Voltage (V) Output Voltage (V) Output Current max (A) Efficiency Vin Min (%) 88 91 93 95 Efficiency Vin Max (%) 85 88 91 93
M-78B2.5-NZ M-78B3.3-NZ M-78B5.0-NZ M-78B6.5-NZ
4.75-18 4.75-18 6.5-18 8-18
2.5 3.3 5 6.5
1.5 1.5 1.5 1.5
NOTE: All specifications in this datasheet are measured at an ambient temperature of 25°C, humidity 2 000 000 hrs (MIL-HDBK-217F, Ground Benign, t=+25°C) 1.5 mm from case for 10 sec 300
C
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Pin Out Specifications
Pin
1 2 3
Single
+Vin GND +Vout
Dimensions
8.90 (0.35)
Footprint
2.54 (0.10)
Front View 11.50 (0.45
Ø 1.0 +0.15/-0 (Ø 0.04 + 0.006/-0
Make-Ps
17.50 (0.69)
Side View
0.50 (0.024)
2.54 (0.10)
DIV: 2.54 (0.1)
1
4.10 (0.16)
2
3 0.50 (0.024) 2.54 (0.10)
Dimensions are typical values: mm (inch) General Tolerance: ± 0.25 (± 0.01) Pin Tolerance: ± 0.1 (± 0.004)
0.30 (0.012)
Bottom View
2.15 (0.09)
3.21 (0.13)
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Derating
Free Air Convection
71º C 100
Output Power (%)
80
Safe Operating Area
60 40 20 0 - 40 - 20 0 20 40 60 80
85
100
Ambient Temperature º C
Typical Application Circuits
M-78B-Z
C1: A low ESR capacitor is required to keep the noise of the converter to a minimum. Ceramic capacitors are recommended with typical value is 10µF / 25V. C2: Installation of C2 is recommended with typical value of 22µF / 16V ceramic for 5V and 6.5V output signal and 22µF / 6.3V ceramic for 2.5V and 3.3V output signal. NOTE: This part is not designed for parallel operation.
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Dual Output Connection
+Vin C1 10uF GND
1 M-78B-Z 2
3
+Vout C2 22uF GND
1 C1 M-78B-Z 2 10uF
Input Filter
3 C2 22uF -Vout
M-78B-Z
Output Filter
10uH ~ 47uH 1 C1 10uF GND
M-78B-Z
3 C1 10uF C1 10uF
+Vout C2 22uF GND
2
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