TDA5345HT Datasheet, PDF (37/44 Pages) NXP Semiconductors – 5 V spindle & VCM driver combo

Philips Semiconductors
5 V spindle & VCM driver combo
Preliminary specification
TDA5345HT
3-4 Spindle Pll Charge Pump (assuming that Resistor @ pin RefCurRes is exactly 33 kΩ)
SYMBOL
I_ch/disch00
I_ch/disch01
I_ch/disch10
I_ch/disch11
SYM_Cur
PARAMETER
charge/discharge current
charge/discharge current
charge/discharge current
charge/discharge current
chargedischarge currents
symetry
rise/Fall time
CONDITIONS
PllCur[1, 0] = “00”
PllCur[1, 0] = “01”
PllCur[1, 0] = “10”
PllCur[1, 0] = “11”
GbD
MIN. TYP.
0.212
0.25
0.425
0.5
0.612
0.72
0.808
0.95
0.93
1
MAX.
0.287
0.575
0.828
1.09
1.07
2
UNIT
µA
µA
µA
µA
ns
3-5 back-EMF comparator
SYMBOL
V_OSen
V_OSdis
V_CT
PARAMETER
comparator offset
comparator offset
center tap bias voltage
CONDITIONS
start up mode
running mode
biasCt = ‘1’ or PorN = ‘0’
MIN.
1
-5
TYP.
8
0
SpinRect
Bemf/2
MAX.
15
5
Unit
mV
mV
V
4. VCM circuits
4-1 VCM driver
SYMBOL
R_DSon
I_OS
I_Max+400
I_Max-400
I_Max+100
I_Max-100
Lin
I_QUIES
V_VcmVdd5Div2
G_PD
DISTO
V_fbmax
V_fbmin
V_RetRefSR
V_RetRefFP
V_RetLim
R_RetTot
PARAMETER
CONDITIONS
total FET resistance
output offset current
maximum positive current
(I _VCM= 400 mA)
DAC12 = “00000000000”
& R_Sense = 1 Ω
high Gain, without offset
maximum negative current high Gain, without offset
maximum positive current low Gain, without offset
maximum negative current low Gain, without offset
transconductance linearity 3 different sections
measured
quiescent current
2 legs of the H-bridge
reference voltage accuracy Ref = Vdd5/2
power driver gain
crossover distortion
GbD
max voltage on Vcm+ or positive fly-back, I<100 mA
Vcm-
min voltage on Vcm+/-
negative fly-back,
I<100 mA
retract circutry ref voltage slow retract mode
retract circutry ref voltage full power retract mode
retract voltage limitation full power retract mode
total mos resistance in
retract mode
spinRectBemf >= 2.5 V
GbD
MIN.
-10
384
-416
92.5
-102.5
-3
-3
4.8
Vdd5+
0.1
-0.3
110
220
2.45
TYP.
MAX.
1.5
+10
400
-400
98.5
-98.5
416
-384
102.5
-92.5
+3
3.4
4.95
Vdd5+
0.2
-0.2
15
+3
5.1
0
Vdd5+
0.3
-0.1
125
140
250
280
2.8
3.14
3.5
UNIT
Ω
mA
mA
mA
mA
mA
%
mA
%
V/V
V
V
mV
mV
V
Ω
1999 June 10
37