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MC34270 数据表(PDF) 4 Page - Motorola, Inc |
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MC34270 数据表(HTML) 4 Page - Motorola, Inc |
4 / 12 page MC34270 MC34271 4 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (continued) (VDD = 6.0 V, for typical values TA = Low to High [Note 1], for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.) Characteristic Unit Max Typ Min Symbol AUXILIARY VOLTAGE OUTPUTS V1, V2, V3, V4 Outputs 1–V1/V0 Ratio: MC34270 0.0565 0.0580 0.0595 MC34271 0.0500 0.0520 0.0535 1–V2/V0 Ratio: MC34270 0.1135 0.1160 0.1185 MC34271 0.1010 0.1035 0.1065 V3/V0 Ratio: MC34270 0.1135 0.1160 0.1185 MC34271 0.1010 0.1035 0.1065 V4/V0 Ratio: MC34270 0.0565 0.0580 0.0595 MC34271 0.0500 0.0520 0.0535 Output Resistance (Isource = 4.0 mA) Ro 20 40 60 Ω Output Short Circuit Current Iss 5.0 10 20 mA LOGIC INPUTS (EN1, EN2, MODE) Input Low State VIL 0 – 0.8 V Input High State VIH 2.0 – 6.0 V Input Impedance Rin 25 50 100 k Ω SOFT START CONTROL (SS1,SS2) Charge Current (Capacitor Voltage = 1.0 V to 4.0 V ) Ichg 0.5 1.0 2.5 µA Discharge Current (Capacitor Voltage = 1.0 V) Idschg 250 650 – µA TOTAL SUPPLY CURRENT VDD Current VDD = 6.0 V ICC – 2.0 5.0 µA Standby Mode (EN1 = EN2 = 0) VDD = 16 V – 3.0 15 VDD Current ICC – 0.7 3.0 mA Backlight “On” (EN1 = 1; EN2 = 0) VDD Current ICC – 0.9 2.0 mA LCD “On” (No Inductor) (EN1 = 0; EN2 = 1) VB Current (V0 = 35 V) IO – 1.2 3.0 mA NOTE: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 10 100 1.5 1.0 f, FREQUENCY (Hz) Figure 1. Switch Output Duty Cycle versus Compensation Voltage VComp, COMPENSATION VOLTAGE (V) Figure 2. Error Amp Open Loop Gain and Phase versus Frequency 0.6 0.4 0.2 0 0.8 80 60 40 20 0 –20 2.0 2.5 3.0 3.5 4.0 4.5 100 1.0 k 10 k 100 k 1000 k 90 120 150 180 VDD = 6.0 V TA = 25°C VDD = 6.0 V VComp = 2.5 V RL = Open TA = 25°C 0 30 60 Gain Phase |
类似零件编号 - MC34270 |
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类似说明 - MC34270 |
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