PM6681A STMicroelectronics, PM6681A Datasheet - Page 13

• Manufacturer Part Number: PM6681A
• Description: Dual synchronous step down controller with adjustable LDO
• Manufacturer: STMicroelectronics

PM6681A
6
Typical operating characteristics
(FSEL = GND (200/300 kHz), SKIP = GND (skip mode), V5SW = EXT5 V (external 5 V
power supply connected), input voltage VIN = 24 V, SHDN, EN1 and EN2 high,
OUT1 = 3.3 V, OUT2 = 1.8 V, no load, LDO = 3.3 V, (LDO_FB divider = 5.6 k and 15 k)
unless specified)
Figure 4.
Figure 6.
Figure 8.
Efficiency vs current load
PWM no load battery current
vs input voltage
Skip no load battery current
vs input voltage
Figure 5.
Figure 7.
Figure 9.
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Typical operating characteristics
Efficiency vs current load
No-audible skip no load
battery current vs input
voltage
Shutdown mode input battery
current vs input voltage
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