
71M6543F/H and 71M6543G/GH Data Sheet
v1.2
2008–2011 Teridian Semiconductor Corporation
141
Parameter
Condition
Min
Typ
Max
Unit
VSYS to VLCD switch impedance
V3P3 = 3.3 V,
RVLCD=removed, LCD_BAT=0,
LCD_VMODE[1:0]=0,
ILCD=10 A
750
VBAT to VLCD switch impedance
V3P3 = 0 V, VBAT = 2.5 V,
RVLCD =removed, LCD_BAT =1,
LCD_VMODE[1:0]=0,
ILCD=10 A
700
LCD Boost Frequency
LCD_VMODE[1:0] = 2,
RVLCD = removed,
CVLCD = removed
PLL_FAST=1
PLL_FAST=0
820
786
kHz
VLCD IOH current
(VLCD(0)-VLCD(IOH)<0.25)
LCD_VMODE[1:0] = 2,
LCD_CLK[1:0] = 2,
RVLCD = removed,
V3P3 = 3.3V,
LCD_DAC[4:0] = 1F
10
A
From LCDADJ0 and LCDADJ12 fuses:
(_)=50+120
12 _
(_)=2.65+2.65_31+(_)
The above equations describe the nominal value of VLCD for a specific LCD_DAC value. The
specifications below list the maximum deviation between actual VLCD and VLCDnom. Note that when
VCC and boost are insufficient, the LCD DAC will not reach its target value and a large negative error
will occur.
LCD_DAC Error. VLCD-VLCDnom
Full Scale, with Boost
V3P3 =3.6 V
V3P3 =3.0 V
VBAT=4.0 V, V3P3=0, BRN Mode
VBAT=2.5 V, V3P3=0, BRN Mode
LCD_VMODE = 10,
LCD_DAC[4:0] = 1F,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
-0.4
-0.15
-1.3
0.15
V
LCD_DAC Error. VLCD-VLCDnom
DAC=12, with Boost
V3P3 = 3.6 V
V3P3 = 3.0 V
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_VMODE = 10,
LCD_DAC[4:0] = C,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
0.15
V
LCD_DAC Error. VLCD-VLCDnom
Zero Scale, with Boost
V3P3 = 3.6 V
V3P3 = 3.0 V
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_VMODE = 2,
LCD_DAC[4:0] =0,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
0.15
V
LCD_DAC Error. VLCD-VLCDnom
Full Scale, no Boost
V3P3 = 3.6 V (see note 1)
V3P3 = 3.0 V (see note 1)
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_VMODE = 1,
LCD_DAC[4:0] = 1F,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-2.1
-2.8
-1.8
-3.2
V
LCD_DAC Error. VLCD-VLCDnom
DAC=12, no Boost
V3P3 = 3.6 V
V3P3 = 3.0 V
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_VMODE = 1,
LCD_DAC[4:0] = C,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.5
-1.1
-0.15
1
-1.5
1
0.15
1
V