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ADM8845ACPZ-REEL1 Datasheet(PDF) 3 Page - Analog Devices |
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ADM8845ACPZ-REEL1 Datasheet(HTML) 3 Page - Analog Devices |
3 / 20 page ADM8845 Rev. 0 | Page 3 of 20 SPECIFICATIONS VCC = 2.6 V to 5.5 V; TA = −40°C to +85°C, unless otherwise noted; C1,C2 = 1.0 µF; C3 = 2.2 µF; C4 = 4.7 µF Table 1. Parameter Min Typ Max Unit Test Conditions INPUT VOLTAGE, VCC 2.6 5.5 V SUPPLY CURRENT, ICC 2.6 5 mA All six LEDs disabled, VCC = 3.3 V, RSET = 7.08 kΩ CTRL1 = 1, CRTL2 = 1 SHUTDOWN CURRENT 5 µA CHARGE PUMP FREQUENCY 1.5 MHz CHARGE PUMP MODE THRESHOLDS 1.5× to 2× 3.33 V Accuracy 4 % 2× to 1.5× 3.36 V Accuracy 4 % Hysteresis 40 mV 1× to 1.5× 4.77 V Accuracy 4 % 1.5× to 1× 4.81 V Accuracy 4 % Hysteresis 40 mV ISET PIN LED : LED Matching −1 +1 % ILED = 20 mA, VFB =0.4 V LED : ISET Accuracy −1 +1 % ILED = 20 mA, RSET = 7.08 kΩ, VFB = 0.4 V, VCC = 3.6 V, TA = 25°C ISET Pin Voltage 1.18 V ILED to ISET Ratio 120 MIN COMPLIANCE ON FBx PIN 0.2 0.3 V ISET = 20 mA Charge Pump Output Resistance 1.2 1.8 Ω 1× mode 3.5 5.1 Ω 1.5× mode 8.0 14 Ω 2× mode LED Current 30 mA See Note 1 and Figure 21 PWM 0.1 200 kHz DIGITAL INPUTS Input High 0.5 VCC V Input Low 0.3 VCC V Input Leakage Current 1 µA CHARGE PUMP POWER EFFICIENCY 88 % CTRL1 = 1, CRTL2 = 1, VCC = 3.4 V, VFB = 0.2 V, IFB = 20 mA VOUT RIPPLE 30 m V VCC = 3.6 V, ILED = 20 mA, all six LEDs enabled _______________________ 1 Guaranteed by design. Not 100% production tested. |
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