L6902D013TR 查看數據表（PDF） - STMicroelectronics
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L6902D013TR Datasheet PDF : 11 Pages
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L6902
1
Test and application circuit
Test and application circuit
Figure 1. Test and application circuit
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Pin connection
Figure 2. Pin connection
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Table 2. Pin description
N° Pin
Function
1 OUT Regular output
2 CS+ Current error amplifier input (current sense at higher voltage)
3 CS- Current error amplifier input (current sense at lower voltage)
4 COMP E/A output to be used for frequency compensation
Stepdown feedback input. Connecting directly to this pin results in an output voltage of
1.235 V. An external resistive divider is required for higher output voltages. In this case:
5 FB
Vout
=
VF
B
⋅
⎛
⎝
1
+
RR-----12--⎠⎞
=
1.235V⎝⎛1 + RR-----12--⎠⎞
6 VREF 3.3 V VREF. No cap is need for stability.
7 GND Ground
8 VCC Unregulated DC input voltage.
Doc ID 7332 Rev 9
3/11
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