AM5898N Datasheet PDF - AMtek

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AM5898N
AMtek

Part Number AM5898N
Description Motor Driver
Page 11 Pages


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AM5898N
Motor Driver ICs
Motor Driver for Portable DVD player
with DC-DC Step Down Converter
AM5898N
The AM5898N is a 4-channel BTL driver IC for driving the motors and actuators such as used in DVD player and
consists of two DC-DC Step Down Converters. It is pretty fit for portable DVD player application. Package material
is Pb Free for environmental protection.
Applications
BTL driver for portable DVD player with DC-DC power management.
Features
(A) 4-channel BTL:
1) Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are
voltage-type BTL driver for sled and spindle motors. It is also built-in two DC-DC converters.
2) Wide dynamic range for motor drive [3.6V (typ.) when Vcc= 5V, at RL= 20 load].
(B) 2 DC-DC Step down converters:
1) Efficiency up to 85%
2) Operation from 4.5~16V
3) Typical frequency operation to 240KHz.
4) Over voltage protection built-in.
5) Over current protection built-in.
(C) Common circuit
1) Level shift circuit built-in.
2) Thermal shut down circuit built-in.
3) Mute mode built-in for motor drive. EN1, EN2 mode control for two set of DC-DC step down
converters.
AMtek semiconductors
-1-
Sept 2005 V0.64
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AM5898N
Motor Driver ICs
Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Supply voltage 1 for driver
Vcc1
Supply voltage 2 for driver
Vcc2
Supply voltage for converter
Power dissipation
Operate Temp range
Storage Temp range
PVcc
Pd
Topr
Tstg
*70mm×70mm×1.6mm glass epoxy board.
* 1.Derating: 17.6mW/oC for operation above Ta=25oC
Guaranteed operating conditions (Ta=25°C)
Limits
13.5
13.5
26
2.2 *1
-40 ~ +85
**-55 ~ +150
Parameter
Power supply voltage
Symbol
Vcc1
Vcc2
PVcc
Limits
4.3 ~ 13.2
4.3 ~ Vcc1
4.5 ~ 16
Block diagram
Unit
V
V
V
W
Unit
V
V
V
BIAS MUTE EN1 CT1 COMP1
34 33 32 31 30 29 28 27 26
PGND VCC2
25 24
VINSP VOSP- VOSP+ MGND VOTK-
23 22 21 20 19 18
PGND PGND
GND
PGND
Vcc2
MGND
MUTE
10K
10K
15K
25K
10K 25K
10K
25K
Spindle
Driver(4X)
Actuator
Driver(6x)
Vcc2
Vcc2
Vcc1
Sled
Driver(4X)
Actuator
Driver(6x)
123456789
EN2 CT2 COMP2 SW2 IPK2
GND
Vcc1
10 11
VCC1 VINFC
12
MGND
MGND
13 14 15 16 17
MGND VOSL+ VOSL- MGND VOTK+
AMtek semiconductors
-2-
Sept 2005 V0.64
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AM5898N
Motor Driver ICs
Electrical characteristics
( Unless otherwise specified Ta=25 , Vcc1=5V, Vcc2=5V, PVcc=12V, BIAS=1.65V, RL=8
)
Parameter
Quiescent current
Standby current 1
Standby current 2
Standby current 3
Voltage for mute ON
Voltage for mute OFF
Voltage for EN low
Voltage for EN High
<Actuator drivers>
Output offset voltage
Maximum output voltage
Voltage gain
<Sled motor driver>
Output offset voltage
Maximum output voltage
Closed loop voltage gain
<Spindle motor driver>
Output offset voltage
Maximum output voltage
Voltage gain
Gain error by polarity
<Step down converter>
Oscillator Frequency
Charge Current
Discharge Current
Current Limit Sense Voltage
Comparator Threshold Voltage
Output Source Current
Output Sink Current
Symbol
Icc
Istb1
Istb2
Istb3
Vston
Vstoff
VENL
VENH
Voo
Vom
Gv
Voofsl
Vomsl
Gvsl
Voofld
Vomax
Gvld
Gvld
Fosc
Ichg
Idischg
Vipk
Vth
Isource
Isink
Min
-
-
-
-
0
2.0
0
2.0
-
-
21.5
-
-
18
-
-
13.5
0
-
-
-
-
-
-
-
Limit
Typ
19
3
15
140
-
-
-
-
-
3.4
23.5
-
3.6
20
-
3.2
15.5
1
240
24
144
200
1.25
180
120
Unit
Max
Conditions
- mA
- mA Mute = L, EN1 = H, EN2 = H
- mA Mute = H, EN1 = L, EN2 = L
200 uA Mute = L, EN1 = L, EN2 = L
0.5 V
5V
0.5 V
5V
50 mV
- V @10 Load
25.5 dB VIN=BIAS+0.2Vpp ac @1KHz
100 mV
- V @20
22 dB VIN=BIAS+0.2Vpp ac @1KHz
50 mV
- V @8
17.5 dB VIN=BIAS+0.2Vpp ac @1KHz
2 dB VIN=BIAS+0.2Vpp ac @1KHz
- KHz CT=68PF
- uA
- uA
- mV Rsc=0.1
-V
- mA Vout=0V
- mA Vout=9V
P.S
*This device is not designed for protection against radioactive rays.
AMtek semiconductors
-3-
Sept 2005 V0.64
Datasheet pdf - http://www.DataSheet4U.net/



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Pin configuration
EN2 1
CT2 2
3
SW2 4
IPK2 5
PVCC1 6
PVCC2 7
VOFC+ 8
VOFC- 9
VCC1 10
VINFC 11
VINSL+ 12
MGND 13
VOSL+ 14
VOSL- 15
MGND 16
VOTK+ 17
AMtek semiconductors
AM5898N
Motor Driver ICs
-4-
34 BIAS
33 MUTE
32
31 CT1
30 COMP1
29 SW1
28 IPK1
27 PGND2
26 PGND1
25 PGND
24 VCC2
23 VINTK
22 VINSP
21 VOSP-
20 VOSP+
19 MGND
18 VOTK-
Sept 2005 V0.64
Datasheet pdf - http://www.DataSheet4U.net/



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