SI3201-GSR Silicon Laboratories Inc, SI3201-GSR Datasheet - Page 26

• Manufacturer Part Number: SI3201-GSR
• Description: SLIC 3.3V/3.3V/3.3V/5V/5V/5V
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3201-GSR

• Lead Free Status / Rohs Status: Compliant

Si3216
The subcircuit above can be substituted into any of the ProSLIC solutions as an optional bias circuit for Q5, Q6. For
this optional subcircuit, C7 and C8 are different in voltage and capacitance to the standard circuit. R23 and R24 are
additional components.
26
Note: There are other system and software conditions that influence component value selection; so, please refer to “AN45:
Note: There are other system and software conditions that influence component value selection, so please refer to “AN45:
3.3 V
5.0 V
VDC
Table 19. Component Value Selection Examples for Si321xM MOSFET/Transformer DC-DC Converter
12 V
24 V
VDC
12 V
24 V
Table 20. Component Value Selection Examples for Si321x BJT/Inductor DC-DC Converter
5 V
Component
Component
R23,R24
Design Guide for the Si3210 DC-DC Converter” for detailed guidance.
Design Guide for the Si3210 DC-DC Converter” for detailed guidance.
C7,C8
R28
R29
Ringing Load/Loop Resistance
Ringing Load/Loop Length
Table 18. Component Value Selection for Si321x/Si321xM
Table 17. Si321x Optional Bias Component Values
3 REN/117 
5 REN/117 
5 REN/117 
For V
3 REN/117 
5 REN/117 
5 REN/117 
5 REN/117 
For V
For V
100 nF, 100 V, X7R,  20%
For V
For V
3.0 k  , 1/10 W,  5%
1/10 W, 1% resistor
1/10 W, 1% resistor
CLAMP
CLAMP
CLAMP
DD
DD
= 3.3 V: 26.1 k 
= 5.0 V: 37.4 k 
Value
Value
= 100 V: 676 k 
= 80 V: 541 k 
= 85 V: 574 k 
Rev. 1.0
150 µH
560 µH
33 µH
L1
Transformer Ratio
where V
where V
1:2
1:2
1:3
1:4
CLAMP
100 
162 
274 
R28 = (V
Murata, Johanson, Venkel
R17
Supplier/Part Number
R29 = V
BE
is the clamping voltage for V
is the nominal VBE for Q9
Comments
DD
CLAMP
+ V
0.12 
0.56 
2.2 
R18
0.06 
0.10 
0.68 
2.20 
BE
/148 µA
R18
)/148 µA
R19, R20
R19, R20
16.5 k 
56.2k 
121 k 
7.15 k 
16.5 k 
56.2 k 
121 k 
BAT