OM9551SP, OM9552SP, OM9553SP, OM9554SP 5V Input, 3A Output Current +3.3V, +2.5V +1.8V, +1.5V Output Switching Regulator Three Terminal Package FEATURES • High Efficiency • Internal Short Circuit Protection • Small Footprint • High Power Density- 60W/in.3 APPLICATIONS • High Power 5V to 3.3V Regulation • Low Voltage Battery regulation • Embedded Processor Power • General Purpose Low Voltage Logic Supply • FPGA Power DESCRIPTION The OM955X series of Switching Regulators are designed for pin compatibility with standard 3Pin linear regulators. They are well suited for on-board, non- isolated power applications where efficient point- of- load regulation is needed. The package is designed using Chip- on – Board technology to reduce cost and maintain power density. These units will typically not require any additional components in your application due to capacitance provided internal to the package. MAXIMUM RATINGS @ Ta=25° C (unless otherwise specified) Parameter Input Voltage Output Current Power Dissipation Output Power Lead Temp. Value 8V 4A 1.8W 10W 230°C Conditions Short Circuit Short Circuit Short Circuit < 1 min. CONFIGURATION CHART MODEL OM9551SP OM9552SP OM9553SP OM9554SP OUTPUT VOLTAGE 3.3V 2.5V 1.8V 1.5V TEMPERATURE RANGE -25 to +85°°C -25 to +85°°C -25 to +85°°C -25 to +85°°C MAX. OUTPUT CURRENT 3.0A 3.0A 3.0A 3.0A Rev A 08/01/2000 1 205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com OM9551SP, OM9552SP, OM9553SP, OM9554SP PERFORMANCE CHARACTERISTICS (Ta= 25°°C) INPUT Parameter Line Regulation Input Voltage Range Input Filtering1 OUTPUT Parameter Power Vout Accuracy Vout Regulation Output Ripple Current Limiting Efficiency Efficiency Efficiency Efficiency Min. Load Current Output Filter Capacitance1 DYNAMIC Parameter Transient Response Frequency Symbol Rline Vin Test Conditions 4.5V≤ ≤ Vin ≤5.5V Symbol Test Conditions Po Vo= 3.3V Vo= 3.3V, +2.5V, ∆Vo +1.5V+1.8V Vreg Vη η Ilim η η η η Il(min) Co MAX +0.5 7.0 Units % V 22 uF MIN TYP 0.8 MAX 10 1.0 Units W % 0.1 100 % mV(p-p) A % % % % A uF 0.3 80 4.0 88 87 86 85 Vin= 5V, 0.1≤ Iο≤3A Vin= 5V, Io= 3.0A Vin= 5V Vin=5V,Io=3A,Vo=+3.3V Vin=5V,Io=3A,Vo=+2.5V Vin=5V,Io=3A,Vo=+1.8V Vin=5V,Io=3A,Vo=+1.5V 0.1 All Models Test Conditions 50% load step ∆Vout 0 to 85°°C ENVIRONMENTAL Parameter MODEL Operating OM9551SP, Temperature OM9552SP, OM9553SP, OM9554SP Storage Temp. Flammability 1 MIN -0.5 4.5 330 MIN TYP 40 MAX 200 225 175 200 MIN -25 MAX 85 Units °C -40 125 UL94V0 °C Units µS mV KHz Included in the package Rev A 08/01/2000 2 205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com OM9551SP, OM9552SP, OM9553SP, OM9554SP Typical Performance Characteristics (Ta= 25°°C) Vo= +3.3V Efficiency vs Output Current Vo= +3.3V 100.00 95.00 Efficiency (%) 90.00 85.00 80.00 75.00 4.5V 70.00 5.0V 65.00 5.5V 60.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Iout (A) 2.00 1.80 1.60 Pow er Dissipation vs Output Current 4.5V 5.0V 5.5V Ripple (mV) 1.40 PD (W) 1.20 1.00 0.80 0.60 0.40 0.20 0.00 0.00 0.50 1.00 1.50 Iout (A) 2.00 2.50 3.00 Ripple vs Output Curr e nt 200.00 4.5V 180.00 5.0V 160.00 5.5V 140.00 120.00 100.00 80.00 60.00 40.00 20.00 0.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Iout (A) Rev A 08/01/2000 3 205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com OM9551SP, OM9552SP, OM9553SP, OM9554SP MECHANICAL OUTLINE Package Pinout Vout GND Vin Rev A 08/01/2000 4 205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com OM9551SP, OM9552SP, OM9553SP, OM9554SP APPLICATION CIRCUIT Vin(+4.5- 5.5) 0.1uF 1 3 Vout(+) (3.3V) OM9551SP (optional) 0.1uF (optional) 2 COM COM Internal to the package is a 22uF input capacitor and a 330uF output capacitor. The Omnirel process allows sufficient space allocation to include all components necessary to complete the basic regulation design. The additional by-pass capacitors are suggested if an improvement in switching noise becomes necessary. Rev A 08/01/2000 5 205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com