Power System; Architecture, Power Supplies - Intermec CK30 Service Manual

Power System

Architecture, Power Supplies

Vbatt_wall from
Battery Pack
Voltage Limit
detector
Voltage
Reference
BATT_FAULT_IRQ
PSC_IRQ*
VDD_FAULT*
I2C Bus
RESET_IN
I/O KEY
SUS_RES*
PWR_EN
Aquila (CX1) Power Supply
Block Diagram (6/26/02)
Architecture and Power Supplies
CK30 Handheld Computer Service Manual
PWR_EN
AUDIO_5 V
LDO
LDO
Voltage
Conditioner Supercap Charge
Temp
Sensor
Supercap
3.3V Reset
Power Supply Controller
PROG_EN
SERIAL_PROG_CLK
SERIAL_PROG_DATA
+ 5 Volt
Regulator
+ 3.3 Volt
Regulator
Enable
+ 3.3 Volt Backup
Regulator
Voltage Detect
Manual
Reset
Core Voltage
Regulator
En
(.8 - 1.5V)
Chapter 4 — Theory of Operation
+5 V to Status LEDs
Cur. Iimited Switch Teth Scan Vcc
DOCK_EN
Cur. Iimited Switch
Scan + 5 Volts
SCAN_PWR_EN
Cur. Iimited Switch
Scan 3.3 Volts
Cur. Iimited Switch
PCI_3.3 Volts
CF_PWR_EN
3.3 volts (Batt_Vcc, Vccq,
memory, etc)
FET Switch SD_Vcc
SD_PWR_EN
FET Switch BT_Vcc
BT_PWR_EN
FPGA
LDO
(+2.5 Volts)
FPGA power enable
LED BACKLIGHT
LED Backlight Supply
(color display)
BKLT_ON
BKLT_LOW
LCD Bias Generator LCD BIAS SUPPLY
LCD_VDD_EN
PWM BIAS ADJUST
Vcc
Filter
PLL_VCC
Network
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