View ba9707kv datasheet:

Regulator ICs 4-channel switching regulator BA9707KV The BA9707KV, a 4-channel switching regulator that uses a pulse width modulation (PWM) system, can drive all channel PNP transistors directly. FApplications VCRs and other portable equipment FFeatures 1) Reference voltage precision is ± 1%. 3) Triangular waves can be externally synchronized. 2) Output stages are based on the push-pull method 4) Pins allow ON/OFF control of channel 4 only, or all (resembling the totem-pole method), and ON/OFF channels at once. currents can be set independently. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 289 Regulator ICs BA9707KV FBlock diagram 290 Regulator ICs BA9707KV FPin descriptions 291 Regulator ICs BA9707KV FElectrical characteristi