STW4510 Datasheet, PDF (6/57 Pages) STMicroelectronics – 2 step-down DC/DC converters / 5 LDO power management

Functional block diagram
1
Functional block diagram
Figure 1. STw4510 block diagram
Vlx_Vsdc2
Vbat_Vsdc2
Gnd_Vsdc2
Vsdc2
Vlx_Vsdc1
Vbat_Vsdc1
Gnd_Vsdc1
Vsdc1
STw4510
Clk32k_in
Clock
switching
and
control
Vbat_ana
Vbat_Osc
Internal
Pon
Pwren
Gnd_ana
Oscillator
Gnd_Osc
t(s) ^VddIO
c _Pon
du VddOK
ro ^Res_pro
P _Pwren
te _{SW_reset}
ole _{Gnd_IO}
bs _SDA
O _SCL
General
control
I2C
Interface
SOFT_START
PORn_Vbat
Pon
Vsdc1 & Vsdc2
Monitoring
Thermal
Shutdown
uct(s) ^- Vsdc1_sel<0>
Vsdc1_sel<1>
d _{Vana3_sel>0>}
ro ^Vana3_sel<1>
Vdig_sel<0>
Vdig_sel<1>
P ^Vana1_sel<0>
Vana1_sel<1>
Vana2_sel<0>
Obsolete^Vana2_sel<1>
Supply
Voltage
Selection
Vref
Bias
Vdig
1, 1.2, 1.5 V
100 or 250 mA
Vana1
1.5, 1.8, 2.5, 2.8 V
150 mA
Vana3
1.8, 2.8, 3.0, 3.3 V
150 mA
Vana2
1.8, 2.8,3.0, 3.3 V
150 mA
Vmmc
1.8, 2.85, 3.0 V
150 mA
Vref_18
Vbat_dig
Vdig
Gnd_vdig
Vbat_vana1_vana3
Vana3
Vana1
Gnd_vana1_vana3
Vbat_vana2
Vana2
Gnd_vana2
Vbat_vmmc
Vmmc
Gnd_vmmc
PM00125
6/57