Data Sheet

EH-ES101
Figure 4:EH-ES101 package information (TOP
VIEW) E hong
®
Professional Bluetooth Solutions Provider
page 11 of 14
Figure 2： Reference Design important
Note:
A. DC-DC transverter select;
(1) When the DC-DC converter is not used, a 0 - o resistor is welded to the welding plate 1-3,
otherwise it cannot work;
(2) When the dc-dc converter is activated, a 10uH inductance is welded to the welding disc
1-2.This method can reduce peak power consumption, and the peak current can be
reduced by about 45%.
B. Pin23 BOOT pin can’t connect to VCC, or else will always goto boot mode;
C. Pin9 VDD1V2 need connect a test pad.
8. Layout and Soldering Considerations
8.1. EH-ES101 external view
Figure 3： EH-ES101 External view
8.2. PCB package outline drawing