Voltage Regulators AN8014S Step-down, step-up, or inverting DC-DC converter control IC Overview Unit: mm The AN8014S is a single-channel PWM DC-DC 10.10.3 converter control IC. 16 9 This IC can provide any one output type from among step-down, step-up and inverting output. Allowing n-channel power MOSFET direct driv- ing, the AN8014S is ideal for high-efficiency power supplies. 0.3 18 Features Wide operating supply voltage range (3.6 V to 34 V) (The voltage is limited within a range between 3.6 V and 17 V if it is connected to a step-down volt- 1.27 0.4 0.400.25 age circuit.) Seating plane Seating plane Totem pole output circuit: output peak current (1 A) SOP016-P-0225A On-chip pulse-by-pulse overcurrent detection and protection circuit Note) The package of this product will be changed to lead-free type Threshold voltage V 0.095 V typical CC (SOP016-P-0225E). See the new package dimensions section On-chip bootstrap circuit (allowing n-channel later of this datasheet. MOSFET direct driving.) On-chip under-voltage lock-out circuit (U.V.L.O.) On-chip on/off function (active-high control input, standby current of maximum 5 A) On-chip timer latch short-circuit protection circuit Maximum oscillator frequency (500 kHz) Applications DC-DC switching power supply Block Diagram Triangular V REF wave OSC 10 2.5V Constant CLM current Latch source RQ S 16 On/off OFF active-high 1 A 10 A 15 Boot V strap CC R Q U.V.L.O. 14 CB Q S PWM comp. 13 R Out Latch Q S 5 S.C.P. 6 IN+ 7 Error amp. S.C.P. IN comp. Publication date: April 2002 SDH00004CEB 1 Maintenance/ Discontinued Please visit following URL about latest information. AN8014S Pin Descriptions Pin No. Description Pin No. Description 1 Internal reference output 9 Not connected 2 Oscillator timing resistor connection 10 Overcurrent protection input 3 Oscillator timing capacitor connection 11 Signal ground 4 Dead-time control 12 Output stage ground 13 Totem pole type output 5 Capacitance connection for short-circuit protection delay 14 Bootstrap output 6 Error amplifier noninverting input 15 Supply voltage 7 Error amplifier inverting input 16 On/off control 8 Error amplifier output Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage V 35 V CC Supply current I mA CC 2 * Power dissipation P 143 mW D 1 * Operating ambient temperature T 30 to +85 C opr 1 * Storage temperature T 40 to +125 C stg On/off pin allowable application voltage V V V ON/OFF CC Error amplifier allowable input voltage V 0.3 to V V I REF DTC pin allowable application voltage V 0.3 to V V DTC REF Out pin allowable application voltage V 35 V OUT Out pin constant output current I 100 mA O Out pin peak output current I 1 000 mA O(Peak) CB pin allowable application voltage V 35 V CB CB pin constant output current I 100, 150 mA CB CB pin peak output current I 500, 1 000 mA CBP CLM pin allowable application voltage V V V CLM CC Note) 1. 1: Except for the operating ambient temperature and storage temperature, all ratings are for T = 25C. * a 2: At T = 85C * a 2. Do not apply external currents or voltages to any pins not specifically mentioned. For circuit currents, + denotes current flowing into the IC, and denotes current flowing out of the IC. Recommended Operating Range Parameter Symbol Range Unit Supply voltage V Step-up circuit system 3.6 to 34 V CC Step-down circuit system 3.6 to 17 SDH00004CEB 2 Maintenance/ Discontinued Please visit following URL about latest information.