TS3300 Datasheet, PDF (7/12 Pages) Touchstone Semiconductor Inc – 0.6-4.5VIN, 1.8-5.25VOUT, 3.5-uA, Low Input Voltage, High-Efficiency Boost + LDO

TS3300
PIN FUNCTIONS
PIN
NAME
1
BI
2
CCP
3
BEN
4
BI FB
5
FAC
6
SW EN
7
REG EN
8
REG FB
9
GND
10
REGOUT
11
REGIN
12
GND
13
BO FB
14
BO
15
LSW
16
GND
EP
FUNCTION
Boost Input. Connect to input source. CBI Connection.
Place a 3.3nF capacitor between this pin and GND
Boost Enable (active low). To enable the TS3300, connect this to GND. To
disable the TS3300, set the voltage to greater than VBI – 50mV.
Boost Input Feedback for Anti-Crush Voltage Setting. The BI FB pin
voltage is 392mV. To set the anti-crush voltage, refer to the Applications
Information section and to Figure 4.
Factory use only. Do not connect to GND or VDD. Leave open.
Connect to REGIN.
Output Load-Switch Logic Input Control (active low).
Connect to REGIN.
Ground. Connect this pin to the analog ground plane.
Boost Regulator Load-Switch output.
Boost Regulator Load-Switch input. Connect to BO for use.
Ground. Connect this pin to the analog ground plane.
Boost Output Feedback. The BO FB pin voltage is 505mV. BO FB coupled
with a voltage divider circuit sets the boost regulator output voltage. Refer
to Figure 3.
Regulated output voltage set by resistor network. To set regulated output
voltage, refer to Figure 3. CBO connection.
Inductor Connection.
Ground. Connect this pin to the analog ground plane.
For best electrical and thermal performance, connect exposed paddle to
GND.
BLOCK DIAGRAM
TS3300 Rev. 1.0
Page 7