HA13571FR Datasheet, PDF (19/22 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver for HDD

HA13571FR
Electrical Characteristics (cont)
Item
Symbol Min Typ
Max Unit Test Conditions
Applica-
ble pins Note
VCM
output
driver
Output offset
current
Ios
—
—
±28 mA Rs = 0.33Ω, Rl = 10Ω,
VISENH
R102 = 10kΩ, R103 = 6.6kΩ
C106, R107 = OPEN
Transconductance Gm
—
0.5
±5% A/V Vin = FLTOUT
–3dB bandwidth BW
—
300
±30% kHz Vout = VCMN, Rl = 15Ω
Total harmonic
distortion
THD
—
1.0
2.5 % f = 1kHz, Vout = 1Vrms
Time of crossover Tcro
—
2
5
µs Ramp input
1
distortion
VCMINP 20µs
R102 = 10kΩ, R103 = 6.6kΩ
C106, R107 = OPEN
Symmetry Vcm
drivers VCMN
VCMP
RATIO 0.95 1.02
= I2/I1
1.09 Ratio I2 = Irvcm at D = 10%
I1 = Irvcm at D = 90%
I0 = Irvcm at D = 50%
Rs = 0.33Ω, R_L = 10Ω
R103/R102 = 10k/6.6k
VCMN
VCMP
Linearity Vcm
drivers VCMN
VCMP
L=
0.99 1.02
| I2–I0 |/
| I1–I0 |
1.05 Ratio
Overvoltage
protection clamp
Vclp2 14.6 15.8
17.0 V
Iclp2 = 100mA
Reference volatge Vvcmref —
Vcc12/2 ±5% V
20kΩ/20kΩ
VCMREF
Retract Output voltage
(Power
on)
Vretout 0.65 0.9
1.3 V
Rs = 0.33Ω, R_L = 15Ω
R1 = 33kΩ, R2 = 10kΩ
VPCNTL = “L”
VCMN
Saturation voltage VsatL —
0.12
0.25 V
(Lower)
VCMP
Retract Min. retract current Iret
(Power
off)
15 —
— mA VIN = VSHPWR + VF(IM10) VCMN
VIN = 2.0–VFSub(@20mA) VCMP
Max. retract voltage Vret
—
—
(VCMN–VCMP)
1.3 V
VIN = 8V, Rm 4Ω,
R1 = 33kΩ, R2 = 10kΩ
Brake Brake voltage
Vbrks —
0.5
0.8 V
Ibrk = 1.2A
SCNTL1 to 3 = High
SDRVU
SDRVV
SDRVW
Vrefout Output voltage
Vref
—
4.0
±0.2 V
Io = 10.0mA, Cl = 10nF
VREFOUT
Booster Output voltage
Vbst
Vcc12 —
+0.8
Vcc12 V
+3.7
Ispn = 0A, Ivcm = 0A
BSTFLT
Vcc12 —
+0.8
Vcc12 V
+3.7
Ispn = 2.2A, Ivcm = 0A
Vcc12 —
+0.8
Vcc12 V
+3.7
Ispn = 0.5A, Ivcm = 1.5A
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