2 - NMF SERIES. Isolated 1W Regulated Single Output. features. pin connections. description

Transcription

1 features Output Regulation <.5% Controllable Output kvdc Isolation Single Isolated Output SIP & DIP Package Styles Efficiency to 62% Power Density 0.85W/cm 3 5V, 2V, 24V & 48V Input 5V, 9V, 2V, 2.75V & 5V Output Footprint from.7cm 2 UL 94V-0 Package Material No Heatsink Required SMD Construction Toroidal Magnetics Fully Encapsulated No External Components MTTF up to 2.4 Million hours PCB Mounting Custom Solutions Available description The NMF series of DC-DC Converters is used where a tightly regulated supply is required. They are ideal for situations where the input voltage is not tightly controlled. The output control pin makes the device particularly suitable for Flash PROM applications where an on/off controlled voltage source is required. pin connections 4 Pin DIP (top view) 7 Pin SIP V IN 0V CTRL +V REG GND V IN GND 0V CTRL +V REG DC-DC Converters 2-59

2 absolute maximum ratings over operating free air* temperature range Input voltage V IN NMF05 types V Input voltage V IN NMF2 types V Input voltage VIN NMF24 types V Input voltage V IN NMF48 types V Output power total W Short-circuit duration s Maximum output voltage rise time after control pin high s Isolation voltage (flash tested for second) VDC Operating free air temperature range C to 70 C Storage temperature range C to 50 C Lead temperature.5mm from case for 0 seconds C electrical specifications (measured at T A =25 C, at nominal input voltage) Input voltage range NMF05 types V 5% Input voltage range NMF2 types V 5% Input voltage range NMF24 types V 5% Input voltage range NMF48 types V 5% Load voltage regulation (0% to 00% full load) % typical.5% max. Line voltage regulation (0% to 00% full load) %/% V IN Output voltage accuracy (control pin open circuit) % Input reflected ripple (20MHz Band limited) mV p-p max. Output ripple (20MHz Band limited) mV p-p max. Insulation resistance at 500VDC M min. Efficiency at full load, 5V output type % typical 45% min. Efficiency at full load, 9V, 2V & 5V output types % typical 55% min. Temperature drift (V OUT ) % per C max. Temperature rise above ambient at full load C Weight NMF05/2/24 DIP and SIP types (typical) grams Weight NMF48 DIP and SIP types (typical) grams Switching frequency at full load (typical) kHz No load power consumption (typical) mW * Free air -- requires a minimum of 0mm air space around the component. See derating curve. 2-60

3 selection guide 5V and 2V input types Part Number Output Voltage (V) Output Current (ma) Power Out (mw) Package Style NMFXX05D NMFXX09D NMFXX2D NMFXX5D NMFXX05S NMFXX09S NMFXX2S NMFXX5S flash PROM types Part Number Output Voltage (V) Output Current (ma) Power Out (mw) Package Style NMF052D NMF052S NMF053D NMF053S DC-DC Converters 2-6

4 selection guide 24V and 48V input types Part Number Output Voltage (V) Output Current (ma) Power Out (mw) Package Style NMFXX05D NMFXX09D NMFXX2D NMFXX5D NMFXX05S NMFXX09S NMFXX2S NMFXX5S typical isolation capacitance (pf) Part Number Output Voltage (V) NMF05XXX NMF2XXX NMF24XXX NMF48XXX

5 typical characteristics NMF05 series NMF2 series NMF24 series NMF48 series temperature derating graph See application notes on page 2-32 Note : All data taken at T A =25 C. DC-DC Converters 2-63

6 typical applications Flash PROM programming voltage control Vcc GND 2 NMF052S 6 Vout = 2V, TTL=0 Vout =.2V, TTL= CTRL 4 5 k TTL Input 0V 0V 2N229, BC07, ZTX45 or similar transistor capable of sinking 50mA continuous current normal isolated regulated output Vcc GND 2 NMF052S 6 Vout CTRL 4 5 NC 0V 2-64

7 mean time to failure (MTTF) in thousands of hours Part Number --25 C 25 C 70 C NMF NMF NMF052/ NMF NMF NMF NMF NMF NMF NMF NMF NMF NMF NMF NMF NMF Note : MTTF figures derived from hybrid model of MIL-HDBK-27F. DC-DC Converters 2-65

8 outline dimensions 4 Pin DIP package styles 2 recommended footprint details All pins on a 2.54mm pitch. All dimensions in mm XX.X 0.50, XX.XX

9 outline dimensions 7 Pin SIP package styles 3 4 Printed Face Printed Face recommended footprint details All pins on a 2.54mm pitch. All dimensions in mm XX.X 0.50, XX.XX 0.25 DC-DC Converters 2-67