1.EN
2. PWRGD
3. IMON
4. CLKEN ，
5. FBRTN
6. FB
7. COMP
8 TRDET
9 VARFEQ
10 VRTT
11 TTSNS
12 GND
13 IREF
14 RPM
15 RT
16 RAMP
17 LLINE
18 CSREF
19 CSSUM
20 CSCOMP
21 ILIM
22 OD3
23 PWM3
24 SWFB3
25 BST2
26 DRVH2
27 SW2
28 SWFB2
29 DRVL2
30 PGND
31 DRVL1
32 PVCC
33 SWFB1
34 SW1
35 DRVH1
36 BST1
37 VCC
38 PH1
39 PH0
40 DPRELP
41 PSI 42 _48
