IXD1601 Low Input Voltage LDO Regulator with Soft Start The IC consists of a reference voltage source, an error amplifier, a driver transistor, a soft start circuit, an over-current protection circuit, a phase compensation circuit, thermal shutdown, undervoltage lockout, and a load capacitor’s discharge switch. The device is available with fixed output voltage from 0.7 V to 1.8 V in 0.05 V increments Excellent internal phase compensation allows the IXD1601 operate with a low ESR ceramic output capacitor CL. The over current protection circuit (the current limiter and the fold back circuit), as well as the thermal shutdown circuit (TSD) are built-in. These two protection circuits operate when either the output current reaches the current limit, or the junction temperature reaches the temperature limit. The built-in UVLO function forces the regulator output OFF, when the voltage at the VBIAS or the VIN pins falls below the UVLO threshold. The soft-start function reduces the inrush current from VIN to VOUT for charging CL at start. The chip enable (CE) function allows set device into standby mode, reducing current consumption to less than 0.01 µA from VBIAS and VIN sources, and simultaneously discharging load capacitor through the internal auto-discharge switch located between VOUT and VSS pins. Regulator is available in SOT-25, SOT-89-5, and USP-6C packages. FEATURES o o o o o o o o o o o o o o o o o Output Current up to 400 mA (550 mA max) Dropout Voltage 38 mV @ 100 mA, (VBIAS - VOUT = 2.4 V) Bias Voltage Range 2.5 V – 6.0 V (VBIAS - VOUT ≥ 1.2 V) Output Voltage Range from 0.7 V to 1.8 V with 0.05 V increments Output Voltage Accuracy ± 0.02 V Low Power Consumption at 25 µA typical from VBIAS and 1.0 µA from VIN Under-voltage Lockout VBIAS = 2.0 V, VIN = 0.4 V ON/OFF switch Standby Current less than 0.01 µA typical Soft Start Time 240 µs @ VOUT = 1.2 V Thermal shutdown Current Limit and Short Circuit Protection Load Capacitor Auto Discharge Low ESR Ceramic Capacitor compatible 0 Operating Ambient Temperature - 40 + 85 C Packages : SOT-25, SOT-89-5, and USP-6C EU RoHS Compliant, Pb Free APPLICATIONS o o o Mobile phones Cameras, VCRs Various portable equipment DESCRIPTION The IXD1601 is a low input voltage CMOS LDO regulator with ±20 mV accuracy and ultra low dropout ideally suited to applications, which require very low power consumption. TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTIC Dropout Voltage vs. Output Current) IXD1601B121 © 2014 IXYS Corp. Characteristics subject to change without notice 1 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ABSOLUTE MAXIMUM RATINGS SYMBOL RATINGS UNITS Input Voltage PARAMETER VIN – 0.3 ~ +7.0 V Bias Voltage VBIAS – 0.3 ~ +7.0 V Output Current IOUT 7001) mA Output Voltage VOUT – 0.3 ~ VIN + 0.3 or VBIAS + 0.32) V CE Input Voltage VCE – 0.3 ~ +7.0 V 250 SOT-25 Power Dissipation2) 600 (PCB mounted) SOT-89-5 PD 500 mW 1300 (PCB mounted) 100 USP-6C 1000 (PCB mounted) Operating Temperature Range TOPR – 40 ~ + 85 0 Storage Temperature Range TSTG – 55 ~ +125 0 C C All voltages are in respect to VSS 1) IOUT ≤ Pd/ (VIN-VOUT) 2) The lowest value between VIN + 0.3 and VBIAS + 0.3 V 3) This is a reference data taken by using the test board. Please refer to page 26 to 28 for details ELECTRICAL OPERATING CHARACTERISTICS Ta = 25 0C PARAMETER SYMBOL CONDITIONS MIN. Bias Voltage Input Voltage2) VBIAS VIN VBIAS = VCE, VIN = VOUT(T) + 0.3 V VBIAS = VCE = 3.6 V 2,5 1.0 Output Voltage 1) VOUT(E)3) VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 V, IOUT = 100 mA 1) IOUT_MAX1 Maximum Output Current IOUT_MAX2 IOUT_MAX3 Load Regulation ∆VOUT Dropout Voltage VDIF1 VDIF2 VDIF3 VDIF4 Supply Current1 IBIAS Supply Current2 IIN Bias Current8) IBIAS MAX Standby Current1 Standby Current2 IBIAS_STB IIN_STB 7) ∆ Bias Regulation ∆ © 2014 IXYS Corp. Characteristics subject to change without notice VBIAS = VCE, VBIAS - VOUT(T) ≥ 1.2 V, VIN = VOUT(T) + 0.5 V VBIAS = VCE, VBIAS - VOUT(T) ≥ 1.3 V, VIN = VOUT(T) + 0.5 V VBIAS = VCE, VBIAS - VOUT(T) ≥ 1.5 V, VIN = VOUT(T) + 0.5 V VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 V 1 mA ≤ IOUT ≤ 300 mA VBIAS = VCE, IOUT = 100 mA VBIAS= VCE, IOUT = 200 mA VBIAS= VCE, IOUT = 300 mA VBIAS= VCE, IOUT = 400 mA VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 V, VOUT = OPEN VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 V, VOUT = OPEN VBIAS = VCE = 3.6 V, VIN = VOUT(T) ≥ 1V, VOUT = VOUT(T) – 0.05 V VBIAS = VCE = 3.6 V, VIN = 1 V, VOUT(T) < 1V, VOUT = VOUT(T) – 0.05 V VBIAS = 6.0 V, VIN = 3.0 V, VCE = 0 V VBIAS = 6.0 V, VIN = 3.0 V, VCE = 0 V VBIAS = VCE, VIN = VOUT(T) + 0.3 V, VOUT(T) ≥ 1.3 V, IOUT = 1 mA, VOUT(T) +1.2 V ≤ VBIAS ≤ 6.0 V VBIAS = VCE, VIN = VOUT(T) + 0.3 V, VOUT(T) < 1.3 V, IOUT = 1 mA, 2.5 V ≤ VBIAS ≤ 6.0 V 2 TYP. MAX. UNIT 6.0 3.0 V V VOUT(T)VOUT(T)+ VOUT(T)4) 0.02 0.02 E-05) V 200 mA 300 mA 400 mA 8 17 CIRCUIT mV 6) E-1 E-26) E-36) E-46) mV 8 25 45 µA 0.1 1.0 3.0 µA 1.0 2.5 mA 0.01 0.01 0.10 0.35 µA µA 0.01 0.3 %/V Doc. No. IXD1601_DS, Rev. N0 IXD1601 ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED) Ta = 25 0C PARAMETER SYMBOL ∆ Line Regulation UVLO ∆ Bias Voltage VBIAS_UVLO Input Voltage VIN_UVLO Bias Voltage VBIAS_PSRR Input Voltage VIN_PSRR Ripple Rejection Output Voltage Temperature Characteristics ∆ ∆ Current Limit ILIM Short Circuit Current ISHORT Thermal Shutdown Detect Temperature Thermal Shutdown Hystetresis TTSD CONDITIONS VBIAS = VCE = 3.6 V, VOUT(T) < 0.90V, IOUT = 1 mA, 1.0 V ≤ VIN ≤ 3.0 V VBIAS = VCE = 3.6 V, VOUT(T) ≥ 0.90V, IOUT = 1 mA, VOUT(T) + 0.1 V ≤ VIN ≤ 3.0 V VBIAS = VCE, VIN = VOUT(T) + 0.3 V, IOUT = 1 mA VBIAS = VCE = 3.6 V, IOUT = 1 mA VBIAS = VCE = 3.6 VDC + 0.2 Vp-pAC, VIN = VOUT(T) + 0.3 V, IOUT = 30 mA, f = 1 kHz VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 VDC + 0.2 Vp-pAC, IOUT = 30 mA, f = 1 kHz VBIAS = VCE = 3.6 V, VIN = VOUT(T) + 0.3 V, IOUT = 30 mA, - 40 0C ≤ TOPR ≤ 85 0C VBIAS = VCE = 3.6 V, VOUT = VOUT(T) x 0.95 V VIN = VOUT(T) + 0.3 V VBIAS = VCE = 3.6 V, VOUT = 0 V VIN = VOUT(T) + 0.3 V MAX. UNIT 0.01 0.1 %/V 1.37 2.0 2.5 0.07 0.4 0.6 400 THYS CL Discharge Resistance RDCH CE “H” Level Voltage CE “L” Level Voltage5) A Series CE “H” Level Current5) B Series CE “L” Level Current5) VCEH VCEL ICEH VBIAS = 3.6 V, VIN = VOUT(T) + 0.3 V ICEL VBIAS = 3.6 V, VIN = VOUT(T) + 0.3 V VBIAS = 3.6 V, VIN = VOUT(T) + 0.3 V, IOUT = 1 mA Soft Start Time TYP. Junction Temperature VBIAS = 3.6 V, VCE = 0 V, VOUT = VOUT(T) VIN = VOUT(T) + 0.3 V VBIAS = 3.6 V, VIN = VOUT(T) + 0.3 V VBIAS = 3.6 V, VIN = VOUT(T) + 0.3 V 9) MIN. tSS V 40 dB 60 dB ± 100 ppm/0C 550 mA 80 mA 150 0 25 0 C C 610 Ω V V 2.4 -0.1 -0.1 VIN 0.16 8 0.1 0.1 100 410 290 0.75 430 CIRCUIT µA µA µs NOTE: 1) 2) 3) 4) 5) 6) 7) 8) 9) Please use Bias voltage VBIAS within the range VBIAS –VOUT(E) ≥ 1.2 V Please use Input voltage VIN within the range VIN ≤ VBIAS V OUT(E) is an Effective output voltage (Refer to the voltage charts E-0 and E-1) VOUT (T) is a Specified output voltage Please refer to the table named OUTPUT VOLTAGE CHART Please refer to the table named DROPOUT VOLTAGE CHART Vdif = VIN1-VOUT1, where VIN1 is a input voltage, which is enough to keep VOUT = VOUT(E) x 0.98 IBIAS_MAX is a supply current at the VBIAS pin required to provide the output current (IOUT). tSS is defined as a time required to VOUT to reach VOUT(E) x 0.9 V from the moment, when VCEH = 0.75 V applied to the CE pin © 2014 IXYS Corp. Characteristics subject to change without notice 3 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED) Output Voltage Chart NOMINAL OUTPUT VOLTAGE VOUT(T) 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 E-0 OUTPUT VOLTAGE (V) VOUT MIN. MAX. 0.680 0.720 0.730 0.770 0.780 0.820 0.830 0.870 0.880 0.920 0.930 0.970 0.980 1.020 1.030 1.070 1.080 1.120 1.130 1.170 1.180 1.220 1.230 1.270 NOMINAL OUTPUT VOLTAGE VOUT(T) 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 E-0 OUTPUT VOLTAGE (V) VOUT MIN. MAX. 1.280 1.320 1.330 1.370 1.380 1.420 1.430 1.470 1.480 1.520 1.530 1.570 1.580 1.620 1.630 1.670 1.680 1.720 1.730 1.770 1.780 1.820 Dropout Voltage Chart NOMINAL OUTPUT VOLTAGE (V) VOUT(T) 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 VBIAS=3.0 (V) Vdif(mV) Vgs1) (V) TYP. MAX. 2.30 40 300 2.25 250 41 2.20 200 2.15 150 42 2.10 100 2.05 43 68 2.00 1.95 46 72 1.90 1.85 48 75 1.80 1.75 51 81 1.70 1.65 54 87 1.60 1.55 57 92 1.50 1.45 61 94 1.40 63 97 1.35 67 104 1.30 70 113 1.25 74 131 1.20 79 154 E-1 DROPOUT VOLTAGE 1 (mV) Vdif 1 VBIAS=3.3 (V) VBIAS=3.6 (V) VBIAS=4.2 (V) Vdif(mV) Vdif(mV) Vdif(mV) Vgs Vgs Vgs (V) (V) (V) TYP. MAX. TYP. MAX. TYP. MAX. 2.60 35 300 2.90 33 300 3.50 30 300 2.55 250 2.85 250 3.45 250 36 34 31 2.50 200 2.80 200 3.40 200 2.45 150 2.75 150 3.35 150 38 34 31 2.40 100 2.70 100 3.30 100 2.35 2.65 3.25 50 40 61 35 56 32 2.30 2.60 3.20 49 2.25 2.55 3.15 41 63 36 58 32 50 2.20 2.50 3.10 2.15 2.45 3.05 42 65 38 59 32 51 2.10 2.40 3.00 2.05 2.35 2.95 43 68 40 61 33 52 2.00 2.30 2.90 1.95 2.25 2.85 46 72 41 63 34 53 1.90 2.20 2.80 1.85 2.15 2.75 48 75 42 65 34 54 1.80 2.10 2.70 1.75 2.05 2.65 51 81 43 68 35 56 1.70 2.00 2.60 1.65 1.95 2.55 54 87 46 72 36 58 1.60 1.90 2.50 1.55 1.85 2.45 57 92 48 75 38 59 1.50 1.80 2.40 Vgs (V) 4.30 4.25 4.20 4.15 4.10 4.05 4.00 3.95 3.90 3.85 3.80 3.75 3.70 3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 VBIAS=5.0 (V) Vdif(mV) TYP. MAX. 27 300 250 28 200 150 28 100 50 28 44 29 45 29 46 29 47 30 47 30 48 31 48 31 49 32 49 1): Vgs is a Gate –Source voltage of the driver transistor defined as the value of VBIAS – VOUT(T). © 2014 IXYS Corp. Characteristics subject to change without notice 4 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED) Dropout Voltage Chart NOMINAL OUTPUT VOLTAGE (V) VOUT(T) 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 VBIAS=3.0 (V) Vdif(mV) Vgs(*1 (V) TYP. MAX. 2.30 81 300 2.25 250 85 2.20 200 2.15 150 88 2.10 131 2.05 90 139 2.00 1.95 96 146 1.90 1.85 101 154 1.80 1.75 108 170 1.70 1.65 115 179 1.60 1.55 122 192 1.50 1.45 129 197 1.40 135 206 1.35 145 223 1.30 154 248 1.25 165 293 1.20 175 353 E-2 DROPOUT VOLTAGE 1 (mV) Vdif 1 VBIAS=3.3 (V) VBIAS=3.6 (V) VBIAS=4.2 (V) Vdif(mV) Vdif(mV) Vdif(mV) Vgs Vgs Vgs (V) (V) (V) TYP. MAX. TYP. MAX. TYP. MAX. 2.60 74 300 2.90 68 300 3.50 62 300 2.55 250 2.85 250 3.45 250 76 70 63 2.50 200 2.80 200 3.40 200 2.45 150 2.75 150 3.35 150 78 72 63 2.40 117 2.70 110 3.30 100 2.35 2.65 3.25 81 123 74 111 64 98 2.30 2.60 3.20 2.25 2.55 3.15 85 127 76 114 65 101 2.20 2.50 3.10 2.15 2.45 3.05 88 131 78 117 67 103 2.10 2.40 3.00 2.05 2.35 2.95 90 139 81 123 68 106 2.00 2.30 2.90 1.95 2.25 2.85 96 146 85 127 70 108 1.90 2.20 2.80 1.85 2.15 2.75 101 154 88 131 72 110 1.80 2.10 2.70 1.75 2.05 2.65 108 170 90 139 74 111 1.70 2.00 2.60 1.65 1.95 2.55 115 179 96 146 76 114 1.60 1.90 2.50 1.55 1.85 2.45 122 192 101 154 78 117 1.50 1.80 2.40 Vgs (V) 4.30 4.25 4.20 4.15 4.10 4.05 4.00 3.95 3.90 3.85 3.80 3.75 3.70 3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 VBIAS=5.0 (V) Vdif(mV) TYP. MAX. 57 300 250 58 200 150 58 100 58 88 59 90 59 91 60 92 61 93 62 94 63 95 63 97 64 98 1): Vgs is a Gate –Source voltage of the driver transistor defined as the value of VBIAS – VOUT(T). © 2014 IXYS Corp. Characteristics subject to change without notice 5 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED) Dropout Voltage Chart NOMINAL OUTPUT VOLTAGE (V) VOUT(T) 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 VBIAS=3.0 (V) Vdif(mV) Vgs(*1 (V) TYP. MAX. 2.30 130 300 2.25 250 134 2.20 200 2.15 138 204 2.10 2.05 145 216 2.00 1.95 153 227 1.90 1.85 161 239 1.80 1.75 173 264 1.70 1.65 184 289 1.60 1.55 196 313 1.50 1.45 209 323 1.40 222 344 1.35 239 388 1.30 256 442 1.25 1.20 E-3 DROPOUT VOLTAGE 1 (mV) Vdif 1 VBIAS=3.3 (V) VBIAS=3.6 (V) VBIAS=4.2 (V) Vdif(mV) Vdif(mV) Vdif(mV) Vgs Vgs Vgs (V) (V) (V) TYP. MAX. TYP. MAX. TYP. MAX. 2.60 115 300 2.90 107 300 3.50 95 300 2.55 117 2.85 109 3.45 96 250 250 250 2.50 200 2.80 200 3.40 200 2.45 2.75 3.35 150 119 181 111 167 97 2.40 2.70 3.30 148 2.35 2.65 3.25 130 190 115 170 98 151 2.30 2.60 3.20 2.25 2.55 3.15 134 197 117 176 101 153 2.20 2.50 3.10 2.15 2.45 3.05 138 204 119 181 105 155 2.10 2.40 3.00 2.05 2.35 2.95 145 216 130 190 107 159 2.00 2.30 2.90 1.95 2.25 2.85 153 227 134 197 109 163 1.90 2.20 2.80 1.85 2.15 2.75 161 239 138 204 111 167 1.80 2.10 2.70 1.75 2.05 2.65 173 264 145 216 115 170 1.70 2.00 2.60 1.65 1.95 2.55 184 289 153 227 117 176 1.60 1.90 2.50 1.55 1.85 2.45 196 313 161 239 119 181 1.50 1.80 2.40 Vgs (V) 4.30 4.25 4.20 4.15 4.10 4.05 4.00 3.95 3.90 3.85 3.80 3.75 3.70 3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 VBIAS=5.0 (V) Vdif(mV) TYP. MAX. 89 300 250 90 200 150 90 132 91 134 92 137 93 139 93 140 94 141 95 142 96 145 97 148 98 151 1): Vgs is a Gate –Source voltage of the driver transistor defined as the value of VBIAS – VOUT(T). © 2014 IXYS Corp. Characteristics subject to change without notice 6 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED) Dropout Voltage Chart NOMINAL OUTPUT VOLTAGE (V) VOUT(T) 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 VBIAS=3.0 (V) Vdif(mV) Vgs(*1 (V) TYP. MAX. 2.30 189 300 2.25 195 277 2.20 2.15 201 277 2.10 2.05 206 277 2.00 1.95 218 277 1.90 1.85 227 231 1.80 334 1.75 248 376 1.70 1.65 264 418 1.60 1.55 281 460 1.50 1.45 1.40 1.35 1.30 1.25 1.20 E-4 DROPOUT VOLTAGE 1 (mV) Vdif 1 VBIAS=3.3 (V) VBIAS=3.6 (V) VBIAS=4.2 (V) Vdif(mV) Vdif(mV) Vdif(mV) Vgs Vgs Vgs (V) (V) (V) TYP. MAX. TYP. MAX. TYP. MAX. 2.60 157 300 2.90 146 300 3.50 129 300 2.55 2.85 3.45 250 164 272 150 250 131 2.50 2.80 3.40 246 2.45 2.75 3.35 170 272 153 250 134 246 2.40 2.70 3.30 2.35 2.65 3.25 189 272 157 250 136 246 2.30 2.60 3.20 2.25 2.55 3.15 195 272 164 250 139 246 2.20 2.50 3.10 2.15 272 2.45 250 3.05 246 201 170 142 2.10 277 2.40 248 3.00 215 2.05 2.35 2.95 206 296 189 255 146 219 2.00 2.30 2.90 1.95 2.25 2.85 218 315 195 266 150 224 1.90 2.20 2.80 1.85 2.15 2.75 231 334 201 277 153 228 1.80 2.10 2.70 1.75 2.05 2.65 248 376 206 296 157 234 1.70 2.00 2.60 1.65 1.95 2.55 264 418 218 315 164 241 1.60 1.90 2.50 1.55 1.85 2.45 281 460 231 334 170 248 1.50 1.80 2.40 Vgs (V) 4.30 4.25 4.20 4.15 4.10 4.05 4.00 3.95 3.90 3.85 3.80 3.75 3.70 3.65 3.60 3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 VBIAS=5.0 (V) Vdif(mV) TYP. MAX. 116 300 250 118 231 119 231 121 231 125 231 128 231 189 128 191 129 193 129 195 131 198 134 202 136 205 1): Vgs is a Gate –Source voltage of the driver transistor defined as the value of VBIAS – VOUT(T). © 2014 IXYS Corp. Characteristics subject to change without notice 7 Doc. No. IXD1601_DS, Rev. N0 IXD1601 PIN CONFIGURATION The dissipation pad for the USP-6C package should be solder-plated in respect with mounting pattern and metal mask to improve heat dissipation and. mounting strength. If the pad needs to be connected to other pins, it should be connected to the VBIAS (No. 1) pin. SOT-25 (TOP VIEW) SOT-89-5 (TOP VIEW) USP-6C (BOTTOM VIEW) PIN ASSIGNMENT SOT-25 1 3 4 2 5 1) PIN NUMBER SOT-89-5 2 1 5 3 4 USP-6C 2 4 5 3 1 6 PIN NAME VBIAS VIN VOUT VSS CE NC FUNCTIONS Power Supply Input LDO Regulator Input Output Voltage Ground ON/OFF Control1) No Connection Version A - LOW or OPEN – Standby mode, HIGH – Active; version B - LOW – Standby mode, HIGH – Active. Version B does not have pull-down resistor at CE input and it should not be in OPEN state. BLOCK DIAGRAM IXD1601A IXD1601B Diodes inside the circuits are ESD protection diodes and parasitic diodes. BASIC OPERATION The Error Amplifier of the IXD1601 series monitors output voltage divided by internal resistors R1 & R2 and compares it with the internal Reference Voltage (see Block Diagram above). The output signal from error amplifier drives gate of the N-channel MOSFET, which is connected to the VOUT pin and operates as a series voltage regulator for VIN voltage. VBIAS is a power supply pin for internal circuits. When output current increases, the VBIAS current goes up too. Difference VBIAS – VOUT(T), which is N-channel MOSFET Vgs voltage, should be high enough to obtain high output current through low on-resistance. The Current Limit/Short Protection circuits monitor level of the output current, and Thermal shutdown circuit monitors die temperature to prevent IC damage by excessive current. The CE pin allows shutdown internal circuitry to minimize power consumption. © 2014 IXYS Corp. Characteristics subject to change without notice 8 Doc. No. IXD1601_DS, Rev. N0 IXD1601 CL High-speed Discharge Function The N-channel transistor located between VOUT and VSS pins quickly discharge the output capacitor (CL), when the CE pin does low. The discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance RDCH = 430 Ω (TYP.) and the output capacitance (CL). Time constant τ = CL x RDCH determines the output voltage after discharge as V = VOUT (E) × e-t/τ where: V OUT (E) - Output voltage, and t - Discharge time Discharge time can be calculated also by the next formula: t =τ x ln (VOUT (E)/V) Current Limiter, Short-Circuit Protection The IXD1601 series include a combination of a fixed current limiter circuit and a fold back circuit, which aid the operations of the current limiter and circuit protection. When the load current reaches the current limit level, the fixed current limiter circuit activates and output voltage drops. Because of this drop, the fold back circuit activates too, and output voltage drops further decreasing output current. When the output pin is shorted, a current of about 80 mA flows. Thermal Shutdown When the junction temperature of the built-in transistor reaches the temperature limit, the thermal shutdown circuit activates and turns transistor OFF. The IC resumes normal operation when the junction temperature falls below value determined by Thermal Shutdown Hysteresis. CE Pin The CE pin allows shutdown internal circuitry to minimize power consumption. In shutdown mode, output at the VOUT pin is pulled down to the VSS level by RDCH resistor and N-channel switch, as well as resistors R1 and R2 connected in series. Note that the CE input is active HIGH and version IXD1601A has a pull down resistor. IC will be in off state, if CE pin is open. The IXD1601B version does not have pull-down resistor, and it does not allow CE pin to be open. CE pin current consumption may increase, if voltage applied to this pin is ~ 0.5 of VIN. Low ESR Capacitors An internal phase compensation circuit guarantees stable IXD1601 operation with low ESR capacitors. However, connect the output capacitor CL = 4.7 µF as close to the VOUT and the VSS pins as possible, to not degrade its function. In addition, an input capacitor CIN = 1 µF between the VIN and VSS pins and CBIAS = 1 µF between the VBIAS and VSS should be used to ensure a stable input power. Soft-Start Function The IXD1601 limits at start-up the inrush current charging CL, and it makes the VIN stable. The soft-start time is optimized internally to 240 µs (TYP.) at VOUT = 1.2 V. Soft-start time is defined as a time required to VOUT to reach VOUT(E) x 0.9 V from the moment, when VCEH = 0.75 V applied to the CE pin (See graph below). Under Voltage Lockout (UVLO) When the VBIAS pin voltage drops below 2.0 V (TYP.) or VIN pin voltage drops below 0.4 V (TYP.), UVLO forces the output driver transistor OFF to prevent false output voltage caused by unstable operation of the internal circuitry. © 2014 IXYS Corp. Characteristics subject to change without notice 9 Doc. No. IXD1601_DS, Rev. N0 IXD1601 When the VBIAS pin voltage rise above 2.2 V (TYP.) or the VIN pin voltage rises above 0.4 V (TYP.), the UVLO protection disables, the driver transistor turns ON and voltage regulation resumes. TYPICAL APPLICATION CIRCUIT LAYOUT AND USE CONSIDERATIONS 1. Mount external component as close to the IC as possible and use thick, short connecting traces to reduce the circuit impedance. 2. The IC may malfunction if absolute maximum ratings are exceeded. 3. Please ensure that output current IOUT is less than PD / (VIN - VOUT), where PD is a rated power dissipation value of the package shown at ABSOLUTE MAXIMUM RATING table to not exceed it. 4. If the output capacitor more than CL = 22 µF is used, ringing of input current occurs during rising time. 5. VIN and VCE voltages should be applied at least 10 µs after the bias voltage VBIAS reaches requested level. If VIN and VCE are applied within 10 µs, inrush current up to 1A may occur. TEST CIRCUITS Circuit Circuit Circuit Unless otherwise stated, Ta = 250C © 2014 IXYS Corp. Characteristics subject to change without notice 10 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (1) Output Voltage vs. Output Current IXD1601B071 IXD1601B071 VBIAS = 3.6V, VIN = 1.0 V VBIAS = 3.6V, Ta = 250C IXD1601B121 IXD1601B121 VBIAS = 3.6V, VIN = 1.5 V VBIAS = 3.6V, Ta = 250C IXD1601B181 IXD1601B181 VBIAS = 3.6V, VIN = 2.1 V © 2014 IXYS Corp. Characteristics subject to change without notice VBIAS = 3.6V, Ta = 250C 11 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (2) Output Voltage vs Bias Voltage Topr = 25 0C IXD1601B071 IXD1601B071 VIN = 1.0V, Ta = 250C VIN = 1.0V, Ta = 250C IXD1601B121 IXD1601B121 VIN = 1.5V, Ta = 250C VIN = 1.5V, Ta = 250C IXD1601B181 IXD1601B181 VIN = 2.1V, Ta = 250C © 2014 IXYS Corp. Characteristics subject to change without notice VIN = 2.1V, Ta = 250C 12 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 0 (3) Output Voltage vs. Input Voltage Topr = 25 C IXD1601B071 IXD1601B071 VBIAS = 3.6V, VIN = 1.0 V VBIAS = 3.6V, VIN = 1.0 V IXD1601B121 IXD1601B121 VBIAS = 3.6V, VIN = 1.0 V VBIAS = 3.6V, VIN = 1.0 V IXD1601B181 IXD1601B181 VBIAS = 3.6V, VIN = 1.0 V VBIAS = 3.6V, VIN = 1.0 V I © 2014 IXYS Corp. Characteristics subject to change without notice 13 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (4) Dropout Voltage vs. Output Current 1) IXD1601B121 IXD1601B121 Ta = 25 C VBIAS = 3.6 V IXD1601B121 IXD1601B121 VBIAS = 3.0 V VBIAS = 4.2 V IXD1601B121 IXD1601B121 VBIAS = 3.3 V VBIAS = 5.0 V 0 1) A dropout voltage is a function of the Vgs - a Gate–Source voltage of the driver transistor that is equal Vgs = VBIAS – VOUT(T). © 2014 IXYS Corp. Characteristics subject to change without notice 14 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (5) Supply Bias Current vs. Bias Voltage (6) Supply Input Current vs. Input Voltage IXD1601B071 IXD1601B071 VIN = 1.0 V VBIAS = 3.6V IXD1601B121 IXD1601B121 VIN = 1.5 V VBIAS = 3.6V IXD1601B181 IXD1601B071 VIN = 2.1 V VBIAS = 3.6V © 2014 IXYS Corp. Characteristics subject to change without notice 15 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (7) Output Voltage vs. Ambient Temperature (8) Supply Bias Current vs. Ambient Temperature IXD1601B071 IXD1601B071 VBIAS = 3.6V, VIN = 1.0 V VBIAS = 3.6V, VIN = 1.0 V IXD1601B121 IXD1601B121 VBIAS = 3.6V, VIN = 1.5 V VBIAS = 3.6V, VIN = 1.5 V IXD1601B181 IXD1601B181 VBIAS = 3.6V, VIN = 2.1 V VBIAS = 3.6V, VIN = 2.1 V © 2014 IXYS Corp. Characteristics subject to change without notice 16 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (9) Supply Input Current vs. Ambient Temperature IXD1601B071 VBIAS = 3.6V, VIN = 1.0 V IXD1601B121 VBIAS = 3.6V, VIN = 1.5 V IXD1601B181 VBIAS = 3.6V, VIN = 2.1 V © 2014 IXYS Corp. Characteristics subject to change without notice 17 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (10) Bias Transient Response IXD1601B071 IXD1601B071 Ta = 250C, tR = tF = 5 µs, VIN = 1.0 V, IOUT = 30 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V Ta = 250C, tR = tF = 5 µs, VIN = 1.0 V, IOUT = 200 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V IXD1601B121 IXD1601B1211 Ta = 250C, tR = tF = 5 µs, VIN = 1.5 V, IOUT = 30 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V Ta = 250C, tR = tF = 5 µs, VIN = 1.5 V, IOUT = 200 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V IXD1601B181 IXD1601B181 Ta = 250C, tR = tF = 5 µs, VIN = 2.1 V, IOUT = 30 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V Ta = 250C, tR = tF = 5 µs, VIN = 2.1 V, IOUT = 200 mA, CBIAS = 0, VBIAS = 3.0 V ↔ 4.0 V © 2014 IXYS Corp. Characteristics subject to change without notice 18 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (11) Input Transient Response IXD1601B071 IXD1601B071 Ta = 250C, tR = tF = 5 µs, IOUT = 30 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 1.0 V ↔ 2.0 V Ta = 250C, tR = tF = 5 µs, IOUT = 200 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 1.0 V ↔ 2.0 V IXD1601B121 IXD1601B121 Ta = 250C, tR = tF = 5 µs, IOUT = 30 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 2.0 V ↔ 3.0 V Ta = 250C, tR = tF = 5 µs, IOUT = 200 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 2.0 V ↔ 3.0 V IXD1601B181 IXD1601B181 Ta = 250C, tR = tF = 5 µs, IOUT = 30 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 3.0 V ↔ 4.0 V Ta = 250C, tR = tF = 5 µs, IOUT = 200 mA, CIN = 0,1 µF, VBIAS = 3.6 V, VIN = 3.0 V ↔ 4.0 V © 2014 IXYS Corp. Characteristics subject to change without notice 19 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (12) Load Transient Response IXD1601B071 IXD1601B071 Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 10 mA, ↔ 100 mA Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 10 mA, ↔ 200 mA IXD1601B121 IXD1601B121 Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 1.5 V IOUT = 10 mA, ↔ 100 mA Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 1.5 V IOUT = 10 mA, ↔ 200 mA IXD1601B181 IXD1601B181 Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 2.1 V IOUT = 10 mA, ↔ 100 mA Ta = 250C, tR = tF = 5 µs, VBIAS = 3.6 V, VIN = 2.1 V IOUT = 10 mA, ↔ 200 mA © 2014 IXYS Corp. Characteristics subject to change without notice 20 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (13) VCE Rising Response Time IXD1601B071 IXD1601B071 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 30 mA, VCE = 0 → 3.6 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 200 mA, VCE = 0 → 3.6 V IXD1601B121 IXD1601B121 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.5 V IOUT = 30 mA, VCE = 0 → 3.6 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.5 V IOUT = 200 mA, VCE = 0 → 3.6 V IXD1601B181 IXD1601B181 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 2.1 V IOUT = 30 mA, VCE = 0 → 3.6 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 2.1 V IOUT = 200 mA, VCE = 0 → 3.6 V © 2014 IXYS Corp. Characteristics subject to change without notice 21 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (14) VIN Rising Response Time IXD1601B071 IXD1601B071 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 30 mA, CIN = 0.1 µF, VIN = 0 → 1.0 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 200 mA, CIN = 0.1 µF, VIN = 0 → 1.0 V IXD1601B121 IXD1601B121 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 30 mA, CIN = 0.1 µF, VIN = 0 → 1.5 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 200 mA, CIN = 0.1 µF, VIN = 0 → 1.5 V IXD1601B181 IXD1601B181 Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 30 mA, CIN = 0.1 µF, VIN = 0 → 2.1 V Ta = 250C, tR = 5 µs, VBIAS = 3.6 V, VIN = 1.0 V IOUT = 200 mA, CIN = 0.1 µF, VIN = 0 → 2.1 V © 2014 IXYS Corp. Characteristics subject to change without notice 22 Doc. No. IXD1601_DS, Rev. N0 IXD1601 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (15) VBIAS Ripple Rejection Rate (16) VIN Ripple Rejection Rate IXD1601B071 IXD1601B071 Ta = 25 C, VBIAS = 3.6 VDC + 0.2 Vp-pAC, VIN = 1.0 V IOUT = 30 mA, CBIAS = 0, VIN = 1.0 V Ta = 25 C, VBIAS = 3.6 V, VIN = 1.0 VDC + 0.2 Vp-pAC, IOUT = 30 mA, CIN = 0 IXD1601B121 IXD1601B121 Ta = 250C, VBIAS = 3.6 VDC + 0.2 Vp-pAC, VIN = 1.0 V IOUT = 30 mA, CBIAS = 0, VIN = 1.5 V Ta = 250C, VBIAS = 3.6 V, VIN = 1.5 VDC + 0.2 Vp-pAC, IOUT = 30 mA, CIN = 0 IXD1601B181 IXD1601B181 Ta = 250C, VBIAS = 3.6 VDC + 0.2 Vp-pAC, VIN = 1.0 V IOUT = 30 mA, CBIAS = 0, VIN = 2.1 V Ta = 250C, VBIAS = 3.6 V, VIN = 2.1 VDC + 0.2 Vp-pAC, IOUT = 30 mA, CIN = 0 0 © 2014 IXYS Corp. Characteristics subject to change without notice 0 23 Doc. No. IXD1601_DS, Rev. N0 IXD1601 ORDERING INFORMATION IXD1601 - DESIGNATOR DESCRIPTION Type of Regulator Output Voltage1) Output Voltage Increments SYMBOL A B 07 - 18 = 1, 1 0.1 V increments, i.e. VOUT = 1.2 V =1 B 0.05 V increments, i.e. VOUT = 1.25 V MR - (*) Packages (Taping)1) DESCRIPTION Pull-down resistor at CE pin No pull-down resistor at CE pin Output Voltage Range: 0.7 V～1.8 V, e.g. 1.2 V = 1, = 1, = 2, = 2, =2 =B SOT-25 MR-G SOT-25 PR SOT-89 PR-G SOT-89 ER USP-6C ER-G USP-6C NOTE: The “-G” suffix denotes Halogen and Antimony free as well as being fully RoHS compliant. 1) The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local IXYS sales office or representative. (Standard orientation: R- , Reverse orientation: L- ). © 2014 IXYS Corp. Characteristics subject to change without notice 24 Doc. No. IXD1601_DS, Rev. N0 IXD1601 PACKAGE DRAWING AND DIMENSIONS SOT-25, Units: mm SOT-89-5, Units: mm USP-6C, Units: mm USP-6C Reference Metal Mask Design USP-6C Reference Pattern Layout © 2014 IXYS Corp. Characteristics subject to change without notice 25 Doc. No. IXD1601_DS, Rev. N0 IXD1601 PACKAGE POWER DISSIPATION SOT-25 Power Dissipation The power dissipation varies with the mount board conditions. Please use this data as a reference only. 1. Measurement Conditions: Condition: Ambient: Soldering: Board: Material: Thickness: Through-hole: Mount on a board Natural convection Lead (Pb) free Dimensions 40×40 mm (1600 mm2 in one side) Copper (Cu) traces occupy 50% of the board area on top and bottom layers Package heat sink tied to the copper traces. (Board of SOT-26 is used) Glass Epoxy (FR-4) 1.6 mm 4 x 0.8 Diameter 2. Power Dissipation vs. Ambient Temperature Board Mount (Tjmax = 125 0C) Ambient Temperature, 0C Power Dissipation Pd, mW Thermal Resistance, 0 C/W 25 85 600 240 166.67 © 2014 IXYS Corp. Characteristics subject to change without notice 26 Doc. No. IXD1601_DS, Rev. N0 IXD1601 PACKAGE POWER DISSIPATION (CONTINUED) SOT-89-5 Power Dissipation The power dissipation varies with the mount board conditions. Please use this data as a reference only. 1. Measurement Conditions: Condition: Ambient: Soldering: Board: Material: Thickness: Through-hole: Mount on a board Natural convection Lead (Pb) free Dimensions 40×40 mm (1600 mm2 in one side) Copper (Cu) traces occupy 50% of the board area on top and bottom layers Package heat sink tied to the copper traces. Glass Epoxy (FR-4) 1.6 mm 5 x 0.8 Diameter 2. Power Dissipation vs. Ambient Temperature Board Mount (Tjmax = 125 0C) Ambient Temperature, 0C Power Dissipation Pd, mW Thermal Resistance, 0 C/W 25 85 1300 500 76.92 © 2014 IXYS Corp. Characteristics subject to change without notice 27 Doc. No. IXD1601_DS, Rev. N0 IXD1601 PACKAGE POWER DISSIPATION (CONTINUED) USP-6C Power Dissipation The power dissipation varies with the mount board conditions. Please use this data as a reference only. 1. Measurement Conditions: Condition: Ambient: Soldering: Board: Material: Thickness: Through-hole: Mount on a board Natural convection Lead (Pb) free Dimensions 40×40 mm (1600 mm2 in one side) Copper (Cu) traces occupy 50% of the board area on top and bottom layers Package heat sink teed to copper traces Glass Epoxy (FR-4) 1.6 mm 4 x 0.8 Diameter 2. Power Dissipation vs. Ambient Temperature Board Mount (Tjmax = 125 0C) Ambient Temperature, 0C Power Dissipation Pd, mW Thermal Resistance, 0 C/W 25 85 1000 400 100.00 © 2014 IXYS Corp. Characteristics subject to change without notice 28 Doc. No. IXD1601_DS, Rev. N0 IXD1601 MARKING SOT-25 , SOT89-5, USP-6C SOT-25 SOT-89-5 USP-6C - represents product series MARK 9 PRODUCT SERIES IXD1601xxxxx - represents type of regulator MARK PRODUCT SERIES A IXD1601Axxxx B IXD1601Bxxxx - represents output voltage MARK 0 1 2 3 4 5 6 7 8 9 A B C D E OUTPUT VOLTAGE, V 0.7 0.75 0.8 0.85 0.9 0.95 1.0 1.05 1.1 1.15 1.2 1.25 1.3 1.35 1.4 MARK OUTPUT VOLTAGE, V F H K L M N P R 1.45 1.5 1.55 1.6 1.65 1.7 1.75 1.8 - represents production lot number 01～09, 0A～0Z, 11～9Z, A1～A9, AA～AZ, B1～ZZ in order, (G, I, J, O, Q, W excluded) © 2014 IXYS Corp. Characteristics subject to change without notice 29 Doc. No. IXD1601_DS, Rev. N0 IXD1601 Warranty and Use IXYS CORP. MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. IXYS Corp. products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the IXYS Corp. product could create a situation where personal injury or death may occur. IXYS Corp. reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. IXYS Corp. advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. IXYS Corp. 1590 Buckeye Dr. Milpitas, CA 95035-7418 Phone: 408. 457.9000 Fax: 408. 496.0222 http://www.ixys.com © 2014 IXYS Corp. Characteristics subject to change without notice Document No:IXD1601_DS Revision: N0 Issue date: 2/12/2014 30 Doc. No. IXD1601_DS, Rev. N0