Toshiba Satellite 1700 Series, Maintenance Manual

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1 Hardware Overview 1.7 DC-DC CONVERTER
Satellite 1700 Series Maintenance Manual 1-19
1.7.7 OVER Current protection
+5VALWP: 5.3~8A
+3VALWP: 5.3~8A
+CPU_COREP: 15~21A
1.7.8 OVER Voltage protection
+5VALWP: 5V +(4% ~ 10%)
+3VALWP: 3.3V +(4% ~ 10%)
+CPU_COREP: 2.21V ~2.29V
1.7.9 Under voltage protection
+5VALWP: 5V *(60% ~ 80%)
+3VALWP: 3.3V *(60% ~ 80%)
+CPU_COREP: 0.76V ~0.84V
1.7.10 Short Circuit protection
Latch mode for +5VALWP, +3VALWP, +CPU_COREP
1.7.11 I/O
P1: AC adapter input Jack socket
Pin 1: Center pin Adapter power + input
Pin 2: Barrel (Ring) Adapter power return
DC/DC interface
Item Description I/O
SUSP# Active low input, enable skip mode of MAX1632 and MAX1711 I
51ON# Active low input, this pin controls VS output when system is
using battery power, it is controlled by NS87570. I
FSTCHG Active high input, when NS87570 judges the battery shall be
charged, then this pin will be pulled high. I
TRICKLE Active high input, when battery is trickle charged, then this pin is
pulled high. I
ACIN Active high output, when adapter present, this pin is pulled high,
output for NS87570. O
VR_POK Power good output signal, active high, from +CPU_COREP turn
on edge and goes low before falling –5% of +CPU_COREP. O