External Regulators; Energy Management - Nokia RH-64 Service Manual

RH-64
System module
Vmin/V Vtyp/V Vmax/V ItypmA Imax
VR1 2.7
VR2 2.7
VR3 2.7
VR4 2.7
VR5 2.7
VBATTRF 3.1
The table below shows the typical current consumption in different operation modes.
Signal, Nom Volt.,
Max Current
VANA, 2,78V, 80mA
VBB1 2,78V, sleep
2mA, norm. 50mA
VSIM, 1.8/3.0, 25mA
VIO, 1.8V
VCORE,1.055/1.25/
1.35/1.5V

External regulators

White LED Driver solution is implemented with DC/DC converter. The driver circuit is controlled by UEM output
pin DLIGHT, which add external pull up using a digital transistor and one resistor. The schematics also combined
the UEMIO (5) to control DC/DC enable as another optional using two jumper.

Energy management

Filter components
The master of EM control is UEMCLite and with SW it has the main control of the system voltages and operating
modes. The power distribution diagram is presented in the illustration below.
9243363 (Issue 1)
Table 10 RF power supply
2.78 2.86 65
2.78 2.78 2.4
2.78 2.86 41
2.78 2.86 43
2.78 2.86 29
3.6 4.7 1.5
Table 11 Baseband power supply
Min-Max Voltage (V)
2.7-2.86
2.7-2.86
1.745- 1.8552.910-
3.090
1.72 - 1.88
1.0 - 1.111.188 -
1.3131.285
-1.4151.425 -1.575
Company Confidential
Copyright ©2005 Nokia. All Rights Reserved.
Notes
mA
75 VTX (Supply voltage for PMB3258 LO and RX parts
3.0 VXO (VCXO supply voltage)
47 VTX2 (Supply voltage for PMB3258 modulator
output stage)
48 VRX (Supply for RFIC RX and TX parts)
35 VPLL (Supply for VCO, PLL and digital parts
3.5 Supply voltage for the front-end module (Vbatt,
max=6.0 V)
Iqmax
200
15 sleep, 200
30 sleep, 80
15 sleep, 100
20 sleep, 200
Nokia Customer Care
PSSR(dB)* Notes
50, 40 Disabled in sleep
mode
40, - Sleep mode
possibility
40, - Sleep mode
possibility,
programmable
45, - Sleep mode
possibility
40, - Sleep,
programmable,
Initial voltage
1.35V from reset
Page 8–7