M62292FP 3.3 V, 1.8 V Fixed 2-Output Voltage DC/DC Converter REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Description M62292FP is 3.3 V and 1.8 V fixed stable 2-output step-down DC/DC converter. It is possible to simplify peripheral circuit and to design compact and low cost sets because this device includes peripheral devices in small size 8-pin package. The IC also has Reset circuit with time delay that monitors power supply (VCC = 5 V) and one regulator output (Vout1 = 3.3 V; IN1 terminal), therefore an application system is protected system errors. Especially this is most suitable for application system with microprocessor and ASIC. Features • • • • • • 3.3 V and 1.8 V step-down converter 4 to 15 V wide input supply voltage (VCC = 5 V typ.) Reset circuit with time delay monitors Supply voltage (VCC = 5 V) and regulator output (3.3 V) 110 kHz fixed frequency oscillator without peripheral devices 8-pin SOP package Application Application system with microprocessor and ASIC Block Diagram Cd 6 VCC 4 IN1; 3.3 V 25 µA Vref 1.25 V + − − Comparator (3.3 V detect) Oscillator (110 kHz) Cout1 1 + 7 RESET + Comparator (VCC detect) 0.6 µA VCC − + PWM comp. 3 Cout2 − + − OP Amp + − OP Amp 8 IN1 (3.3 V) REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 1 of 6 5 IN2 (1.8 V) + PWM comp. 2 GND M62292FP Pin Arrangement M62292FP Cout1 1 8 IN1 GND 2 7 RESET Cout2 3 6 Cd VCC 4 5 IN2 Outline: PRSP0008DE-C (recommend) PRSP0008DA-A (8P2S-A) (not recommend for new design) REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 2 of 6 M62292FP Absolute Maximum Ratings (Ta = 25°C, unless otherwise noted) Item Supply voltage Symbol VCC Ratings 16 Unit V Output current (DC/DC converter block) Output current (Reset block) IO IORESET 30 6 mA mA Power dissipation Thermal derating Pd Kθ 440 4.4 mW mW/°C Operating temperature Storage temperature Topr Tstg −20 to +85 −40 to +125 °C °C Conditions ch1, ch2 Ta = 25°C Ta > 25°C Electrical Characteristics (Ta = 25°C, VCC = 5 V, unless otherwise noted) Symbol Min Limits Typ Max Unit Supply voltage Supply current VCC ICC 4.0 5.0 1.5 15 2.8 V mA DC/DC converter block Error Output voltage Amp. VO1 3.15 3.30 3.45 V Line regulation VO2 Vreg-L 1.71 1.80 5 1.89 15 mV ch2 output VCC = 4 to 12 V Input current 1 Input current 2 Iin Iin 150 100 450 300 µA µA ch1 ch2 Oscillator frequency Maximum on duty fOSC TDUTY 65 110 90 160 kHz % Output leakage current Output saturation voltage ICL Vsat −1 1.2 1 2.0 V V VCC = 12 V, VC = 12 V IO = 10 mA, Darlington connection Vs1 3.6 3.8 4.0 V VCC = 5 V detection Detecting voltage 2 ∆Vs1 Vs2 30 2.46 50 2.58 80 2.70 mV V Hysteresis voltage 2 Cd output current ∆Vs2 IPD 30 −1.1 50 −0.6 80 −0.3 mV µA Delay time RESET output current tpd IOC 5 −40 10 −25 20 −17 ms µA RESET low voltage VOL 0.2 VO1 V RESET high voltage VOH 0.8 VO1 V Block All blocks Oscillator Output Item Reset circuit block Reset Detecting voltage 1 circuit Hysteresis voltage 1 REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 3 of 6 Test Condition Without load ch1 output ch1 output (3.3 V) detection Cd = 4700 pF VCC = 5 V, VO = 1/2 × VCC IORESET = 4 mA M62292FP VCC Reset Block Timing Chart 5V 3.85 V 3.80 V 0V ch1 output (VO1) t 3.3 V 2.63 V 2.58 V 0V RESET output t Note: VO1 tpd tpd tpd 0V t −3 tpd: RESET delay time···················tpd (ms) ≈ 2.13 × 10 × Cd (pF) REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 4 of 6 M62292FP Application Circuit (3.3 V and 1.8 V 2-output Voltage DC/DC Converter) VIN (5 V) + Cin 4 VCC VOUT1 (3.3 V) Co1 + R2 8 IN1 Q1 Cout1 1 R1 M62292FP D1 L1 R4 VOUT2 (1.8 V) Co2 Q2 Cout2 3 + R3 5 IN2 RESET Cd GND 7 6 2 L2 D2 Cd 3.3 V Line 1.8 V Line MCU etc. The Expression of Circuit Constants Constants TON TOFF (TON + TOFF) MAX TOFF (MIN) TON (MAX) L (MIN) lpk Note: Expressions VO + VF VIN − VCE (sat) − VO 1 fOSC: 110 kHz (VCC = 5 V) fOSC (TON + TOFF) / ( 1 + TON TOFF ) 1 − TOFF fOSC (VIN − VCE (sat) − VO) × TON (MAX) ∆lO lO + 1 ∆lO 2 VF: Forward voltage drop of an external diode. Vsat: Output saturation voltage of an external switching transistor. ∆IO: Set to 1/3 to 1/5 of maximum output current. Choose an external transistor, diode and inductor with peak current rating approximately greater than "Ipk". REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 5 of 6 M62292FP Package Dimensions JEITA Package Code P-SOP8-4.4x4.85-1.27 RENESAS Code PRSP0008DE-C *1 Previous Code — MASS[Typ.] 0.1g F D 8 NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET. 5 c *2 E HE bp Index mark Terminal cross section ( Ni/Pd/Au plating ) Reference Symbol 4 1 *3 e Z bp x M A A2 L1 A1 θ L y Detail F JEITA Package Code P-SOP8-4.4x5-1.27 RENESAS Code PRSP0008DA-A Min Nom Max 4.65 4.85 5.05 4.2 4.4 4.6 1.85 0.00 0.1 0.20 2.03 0.34 0.4 0.46 0.15 0.20 0.25 0° 8° 5.7 6.2 6.5 1.12 1.27 1.42 0.12 0.10 0.75 0.25 0.45 0.65 0.90 MASS[Typ.] 0.07g E 5 *1 HE 8 Previous Code 8P2S-A D E A2 A1 A bp b1 c c1 θ HE e x y Z L L1 Dimension in Millimeters F 1 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 4 Index mark c A2 *2 A1 D L A Reference Symbol *3 e bp y D E A2 A1 A bp c Detail F HE e y L REJ03D0852-0300 Rev.3.00 Jun 15, 2007 Page 6 of 6 Dimension in Millimeters Min Nom Max 4.8 5.0 5.2 4.2 4.4 4.6 1.5 0.05 1.9 0.35 0.4 0.5 0.13 0.15 0.2 0° 10° 5.9 6.2 6.5 1.12 1.27 1.42 0.1 0.2 0.4 0.6 Sales Strategic Planning Div. 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