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580 Pleasant St. Watertown, MA 02472 PH: (617) 926-0404 FAX: (617) 924-1235
UPS120
SURFACE MOUNT 1A SCHOTTKY RECTIFIER
POWERMITE(R) Power Surface Mount Package
Features:
* * * * * Low Profile -- Maximum Height of 1.1 mm Small Footprint -- Footprint Area of 8.45 mm2 Low VF Provides Higher Efficiency and Extends Battery Life Supplied in 12 mm Tape and Reel -- 12,000 Units per Reel Low Thermal Resistance with Direct Thermal Path of Die on Exposed Cathode Heat Sink
SCHOTTKY BARRIER RECTIFIER
1.0 AMPERES 20 VOLTS
Mechanical Characteristics:
* * * * * * * Powermite is JEDEC Registered as DO-216AA Case: Molded Epoxy Epoxy Meets UL94, VO at 1/8" Weight: 62 mg (appoximately) Device Marking: S20 Lead and Mounting Surface Temperature for Soldering Purposes, 260 Maximum for 10 Seconds C
Description:
The UPS120 Powermite Schottky rectifier is designed to offer optimized forward voltage characteristics for battery powered portable products such as cellular and cordless phones, chargers, notebook computers, printers, PDA's and PCMCIA cards. Typical applications include ac/dc and dc-dc converters, reverse battery protection and "Oring" of multiple supply voltages. The Powermite's patented heat sink design offers the same thermal performance rating as an SMA while being 50% smaller in footprint area and less than 1 mm in overall height. The result is a unique, highly efficient Schottky rectifier in a space saving surface mount package.
Maximum Ratings
RATING Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage Average Rectified Forward Current (At Rated VR, TC = 135 C) Peak Repetitive Forward Current (At Rated VR, Square Wave, 100 KHz, TC = 135 C Non-Repetitive Peak Surge Current (Non-Repetitive peak surge current, halfwave, single phase, 60 Hz) Storage / Operating Case Temperature Operating Junction Temperature Voltage Rate of Change (Rated VR, TJ = 25 C) SYMBOL VRRM VRWM VR IO IFRM IFSM Tstg, TC TJ dv/dt VALUE 20 UNIT V
1.0 2.0 50 -55 to 150 -55 to 125 10,000
A A A C C V/s C/W
Thermal Characteristics
Thermal Resistance - Junction-to-Lead (Anode) (1} Thermal Resistance - Junction-to-Tab (Cathode) (1} Thermal Resistance - Junction-to-Ambient (1}
(1) Pulse Test: Pulse Width 250 s, Duty Cycle 2%. MSC0889.PDF 07-31-98
Rtji Rtjtab Rtja
35 15 248
UPS120
Electrical Characteristics
Maximum Instantaneous Forward Voltage (1), See Figure 2 (IF = 0.1 A) (IF = 1.0 A) (IF = 3.0 A) Maximum Instantaneous Reverse Current, See Figure 4 (VR = 20 V) (VR = 10 V)
(1) Pulse Test: Pulse Width 250 s, Duty Cycle 2%.
VF
IR
TJ = 25 C 0.34 0.45 0.65 TJ = 25 C 0.40 0.10
TJ = 85 C 0.25 0.415 0.67 TJ = 85 C 25 18
V
mA
MECHANICAL DIMENSIONS
Figure 1
MSC0889.PDF 07-31-98
UPS120
UPS120 TYPICAL FORWARD VOLTAGE
PRELIMINARY DATA
10 1 10 5
UPS120 TYPICAL LEAKAGE CURRENTS
PRELIMINARY DATA
150 ^oC 104 85 ^oC
10
0
Ir (uA)
103
If (A)
10
2
25 ^oC
10
1
10
-1 150 ^oC 85 ^oC ^oC 25 0.0 0.1 0.2 0.3 0.4
0.5
0.6
0.7
0.8
0.9
1.0
10
0 0 5 10 15 20 25
Vf (V)
Vr (V)
Figure 2
Figure 3
Figure 4
MSC0889.PDF 07-31-98
UPS120
Preliminary Data Preliminary Data
Preliminary Data
* Reverse power dissipation and the possibility of thermal runaway must be considered when operating this device under any reverse
voltage conditions. Calculations of TJ therefore must include forward and reverse power effects. The allowable operating TJ may be calculated from the equation: TJ = TJmax = r(t)(Pf + Pr) where r(t) = thermal impedance under given conditions. Pf = forward power dissipation, and Pr = reverse power dissipation This graph displays the derated allowable TJ due to reverse bias under DC conditions only and is calculated as TJ = TJ max - r(t)Pr, Where r(t) = Rthja. For other power applications further calculations must be performed.
MSC0889.PDF 07-31-98
UPS120
Preliminary Data
Preliminary Data
MSC0889.PDF 07-31-98

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