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MAX8636 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX8636 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 13 page Dual 300mA Pin-Programmable LDO Linear Regulators 6 _______________________________________________________________________________________ Pin Description PIN MAX8633 MAX8634 MAX8635 MAX8636 NAME FUNCTION 11 11 IN Regulator Input. Supply voltage from 2.7V to 5.5V. Bypass IN with a ceramic capacitor of at least 2.2µF to GND (see the Capacitor Selection and Regulator Stability section). 2— — 2 SHDN Shutdown Input, Active Low. Drive SHDN logic low to shut down both regulators. Connect SHDN to IN or drive logic high for normal operation (see the Power-On Sequence (MAX8633/Max8636 Only) section). —2 2 — SHDN1 LDO1 Shutdown Input, Active Low. Drive SHDN1 logic low to shut down OUT1. Connect SHDN1 to IN or drive logic high for normal operation. —3 5 — SHDN2 LDO2 Shutdown Input, Active Low. Drive SHDN2 logic low to shut down OUT2. Connect SHDN2 to IN or drive logic high for normal operation. 3— 3 3 P2 Programming Input 2. The state of P1 and P2 selects one of nine output-voltage options (see Tables 1, 3). 4— 4 4 P1 Programming Input 1. The state of P1 and P2 selects one of nine output-voltage options (see Tables 1, 3). —4 —— — P Programming Input. The state of P selects one of three output-voltage options for the MAX8634 (see Table 2). 5— — — RESET Reset Output, Active Low, Open Drain. RESET goes high impedance 120ms (min) after VOUT2 rises above 87% of the nominal output voltage. RESET is forced logic low when VOUT2 is below 82.5% of the nominal output voltage. Connect RESET to OUT1, OUT2, or another voltage of VIN or lower with a pullup resistor. —5—5 BP Reference Noise Bypass. Bypass BP to GND with a 0.01µF ceramic capacitor to reduce output noise. 6 6 6 6 GND Ground 7 7 7 7 OUT2 Regulator 2 Output. Guaranteed 300mA output current (see the Calculating Maximum Output Power section). Bypass OUT2 with a ceramic capacitor of at least 2.2µF to GND (see the Capacitor Selection and Regulator Stability section). 8 8 8 8 OUT1 Regulator 1 Output. Guaranteed 300mA output current (see the Calculating Maximum Output Power section). Bypass OUT1 with a ceramic capacitor of at least 2.2µF to GND (see the Capacitor Selection and Regulator Stability section). EP* EP* EP* EP* EP Exposed Paddle. Solder the exposed paddle to a large pad or circuit-board ground plane to increase thermal dissipation. * TDFN package only. |
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