SANYO LB1922 Datasheet
Overview
The LB1922 is a single-chip drive circuit that provides the
direct PWM drive output appropriate for the power
brushless motors used in office automation equipment. It
provides a variety of peripheral circuits on chip, including
a speed control circuit and an FG amplifier. It is optimal
in systems that use a 12-V power supply.
Package Dimensions
unit: mm
3147A-DIP28HS
Monolithic Digital IC
Ordering number : EN5679
63097HA(OT) No. 5679-1/10
SANYO: DIP28HS
[LB1922]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Three-Phase Brushless Motor Driver
for Office Automation Applications
LB1922
Parameter Symbol Conditions Ratings Unit
Supply voltage
V
CC
20 V
V
M
20 V
Output current I
O
T ≤ 100 ms 3.1 A
Allowable power dissipation
Pd max1 Independent IC 3 W
Pd max2 With an arbitrarily large heat sink 20 W
Operating temperature Topr –20 to +80 °C
Storage temperature Tstg –55 to +150 °C
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage range
V
CC
9.5 to 18 V
V
M
9 to 18 V
FG Schmitt output applied voltage V
FGS
0 to 8 V
I
O
1 7 V output 0 to –20 mA
Fixed-voltage output current I
O
2 5 V output 0 to –20 mA
I
O
3 4 V output 0 to –15 mA
FG Schmitt output current I
FGS
0 to 5 mA
Lock detection output current I
LD
0 to 20 mA
Allowable Operating Ranges at Ta = 25°C
With an arbitrarily
large heat sink
Allowable power dissipation, Pd max – W
Ambient temperature, Ta – °C
No. 5679-2/10
LB1922
Parameter Symbol Conditions
Ratings
Unit
min typ max
Current drain 1 I
CC
1 34 50 mA
Current drain 2 I
CC
2 In stop mode 8 11 mA
Output saturation voltage 1 V
O
(sat)1 IO= 1 A, VCC= VM= 10.5 V 2.0 3.0 V
Output saturation voltage 2 V
O
(sat)2 IO= 2 A, VCC= VM= 10.5 V 2.7 4.2 V
Output leakage current I
O
leak 100 µA
[7-V Fixed-Voltage Output]
Output voltage V
HIO
= –10 mA 6.65 7.0 7.35 V
Line regulation ∆V
H
1 VCC= 9.5 to 18 V 50 200 mV
Load regulation ∆V
H
2 IO= –5 to –20 mA 40 200 mV
[5-V Fixed-Voltage Output]
Output voltage V
XIO
= –5 mA 4.45 4.80 5.15 V
Line regulation ∆V
X
1 VCC= 9.5 to 18 V 50 200 mV
Load regulation ∆V
X
2 IO= –5 to –20 mA 5 200 mV
[4-V Fixed-Voltage Output]
Output voltage V
FGIO
= –5 mA 3.65 4.0 4.35 V
Line regulation ∆V
FG
1 VCC= 9.5 to 18 V 40 200 mV
Load regulation ∆V
FG
2 IO= –5 to –15 mA 110 200 mV
[Hall Amplifier]
Input bias current I
HB
–4 –1 µA
Common-mode input voltage range V
ICM
1.5 5.1 V
Hall input sensitivity 60 mVp-p
Hysteresis ∆V
IN
8 14 24 mV
Input voltage (low
→ high) V
SLH
7 mV
Input voltage (high → low) V
SHL
–7 mV
[Oscillator]
Output high-level voltage V
OH(CR)
2.8 3.1 3.4 V
Output low-level voltage V
OL(CR)
0.8 1.1 1.4 V
Oscillator frequency f
(CR)
R = 56 kΩ, C = 1000 pF 15 kHz
Amplitude V
(CR)
2.0 Vp-p
[Current Limiter Operation]
Limiter V
CC-VM
0.4 0.5 0.6 V
[Thermal Shutdown Operation]
Thermal shutdown operating temperature TSD Design target value 150 180 °C
Hysteresis ∆TSD 50 °C
[FG Amplifier]
Input offset voltage V
IO(FG)
–10 +10 mV
Input bias current I
B(FG)
–1 +1 µA
Output high-level voltage V
OH(FG)IFG
= –2 mA 5.5 6 V
Output low-level voltage V
OL(FG)IFG
= 2 mA 1 1.5 V
FG input sensitivity Gain: 100 × 3 mV
Following stage Schmitt amplitude 100 180 250 mV
Operating frequency range 2 kHz
Open-loop gain f
(FG)
= 2 kHz 45 51 dB
[FGS Output]
Output saturation voltage 1 V
O(FGS)IO(FGS)
= 2 mA 0.1 0.5 V
Output leakage current I
L(FGS)VO
= 5 V 10 µA
[Speed Discriminator]
Output high-level voltage V
OH(D)
4.0 4.3 V
Output low-level voltage V
OL(D)
0.8 1.1 V
[PLL Output]
Output high-level voltage V
OH(P)
3.2 3.5 3.8 V
Output low-level voltage V
OL(P)
1.2 1.5 1.8 V
[Number of Counts] 512
Electrical Characteristics at Ta = 25°C, VCC= VM= 12 V
Continued on next page.
No. 5679-3/10
LB1922
Parameter Symbol Conditions
Ratings
Unit
min typ max
[Lock Detection]
Output low-level voltage V
OL(LD)ILD
= 10 mA 0.15 0.5 V
Lock range 6.25 %
[Integrator]
Input bias current I
B(INT)
–0.4 +0.4 µA
Output high-level voltage V
OH(INT)
3.7 4.3 V
Output low-level voltage V
OL(INT)
0.8 1.2 V
Open-loop gain 60 dB
Gain-bandwidth product 1.6 MHz
Reference voltage –5% V
X
/2 +5% V
[Crystal Oscillator]
Operating frequency range f
OSC
1 10 MHz
[Start/Stop Pin]
Input high-level voltage V
IH(S/S)
4.0 V
Input low-level voltage V
IL(S/S)
1.5 V
Pull-down resistance R
D(S/S)
30 50 70 kΩ
[Forward/Reverse Pin]
Input high-level voltage V
IH(F/R)
4.0 V
Input low-level voltage V
IL(F/R)
1.5 V
Hysteresis ∆V
IN
0.5 V
Pull-down resistance R
D(F/R)
30 50 70 kΩ
Continued from preceding page.
Truth Table
Pin Assignment
Note: A high input is defined as IN+> IN–.
Source → sink
F / R = L F / R = H
IN1 IN2 IN3 IN1 IN2 IN3
1 OUT2 → OUT1 H L H L H L
2 OUT3 → OUT1 H L L L H H
3 OUT3 → OUT2 H H L L L H
4 OUT1 → OUT2 L H L H L H
5 OUT1 → OUT3 L H H H L L
6 OUT2 → OUT3 L L H H H L
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