TS3300

TS3300DS r1p0

Page 9

RTFDS

PIN FUNCTIONS

PIN

NAME

FUNCTION

1

BIN

Boost Input. Bypass this pin with a 22µF ceramic capacitor in close

proximity to the TS3300.

2

CCP

Charge Pump Capacitor. Place a 3.3nF capacitor between this pin and

GND

3

BEN

Boost Enable (active low). To enable the TS3300, connect this to GND. To

4

BI FB

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 7.

5

FAC

Factory use only. Do not connect to GND or VDD. Leave open.

6

SW EN

Switch Enable. When SW EN is high and REG EN is low, the internal

FET/SWITCH connects the LDO output to the LDO input. The internal FET

7

REG EN

LDO Regulator Enable. When REG EN is high and SW EN is low, the

LDO is under normal operation. Refer to Table 1.

8

REG FB

LDO Regulator Output Feedback. The REG FB pin voltage is 505mV.

REG FB coupled with a voltage divider circuit sets the LDO output voltage.

Refer to Figure 3.

9

GND

Ground. Connect this pin to the analog ground plane

10

REGOUT

LDO Regulator Output Voltage. A minimum output capacitance of 10µF is

recommended to be placed from this pin to GND. To set the LDO output

voltage, use a voltage divider circuit along with the REG FB pin as shown

in Figure 3.

11

REGIN

LDO Regulator Input/Boost Output. REGIN should always be connected to

the boost regulator output voltage pin BO. BO is always the input to the

LDO. Do not apply an external supply voltage to this pin.

12

GND

Ground. Connect this pin to the analog ground plane.

13

BO FB

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 2.

14

BO

Boost Regulator Output Voltage. A minimum output capacitance of 10µF

is recommended to be placed from this pin to GND. To set the boost

regulator output voltage, use a voltage divider circuit along with the BO FB

pin. Refer to Figure 2.

15

LSW

Coil is a low-ESR, high-saturation current, shielded inductor. A 10µH

inductor is recommended for most applications and is to be placed from

this pin to the input of the boost regulator BI. Furthermore, there should

exist at least an 8% margin between the saturation current of the inductor

and the peak inductor current for a given set of operating conditions.

16

GND

Ground. Connect this pin to the analog ground plane.

EP

For best electrical and thermal performance, connect exposed paddle to

GND.