
Specifications
Absolute Maximum Ratings at Ta=25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
7V
VS max
24
V
Maximum output current
IO max
1.3
A
Allowable power dissipation
Pd max
Arbitrarily large heat sink
LB1952
12.5
W
Independent IC
LB1952
0.77
W
Independent IC
LB1952M
0.95
W
Operating temperature
Topr
–20 to +75
°C
Storage temperature
Tstg
–55 to +150
°C
Allowable Operating Ranges at Ta=25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VS
5to22
V
VCC
4.5 to 5.5
V
Hall input amplitude
VHALL
Between Hall inputs
±30 to ±80
mV0-P
GSENSE input range
VGSENSE
Relative to control system GND
–0.20 to +0.20
V
Electrical Characteristics at Ta=25 °C, VCC =5 V, VS =15 V
Parameter
Symbol
Conditions
min
typ
max
Unit
VCC supply current
ICC
RL = ∞ (when stopped), VCTL =0V,VLIM =0V
12
18
mA
[Output]
Output saturation voltage
VOsat1
IO = 500 mA, Rf = 0.5 , Sink + Source
VCTL =VLIM =5V (with saturation prevention)
2.1
2.6
V
VOsat2
IO = 1.0 A, Rf = 0.5 , Sink + Source
VCTL =VLIM =5V (with saturation prevention)
2.6
3.5
V
Output leakage current
Ioleak
1.0
mA
[FR]
FR pin input threshold voltage
VFSR
2.25
2.50
2.75
V
FR pin input bias current
Ib (FSR)
–5.0
A
[Control]
CTLREF pin voltage
VCREF
2.05
2.15
2.25
V
CTLREF pin input range
VCREFIN
1.50
3.50
V
CTL pin input bias current
Ib (CTL)
With VCTL =5V, CTLREF : Open
4.0
A
CTL pin control start voltage
VCTL (ST)
With Rf = 0.5 ,VLIM =5V,IO ^ 10 mA,
Hall input logic fixed, (u, v,w=H,H,L)
2.00
2.15
2.30
V
CTL pin control Gm
Gm (CTL)
With Rf = 0.5 , IO = 200 mA,
Hall input logic fixed, (u, v,w=H,H,L)
0.46
0.58
0.70
A/V
[Current Limit]
LIM current limit offset voltage
Voff (LIM)
With Rf = 0.5 ,VCTL =5V,IO ^ 10 mA,
Hall input logic fixed, (u, v,w=H,H,L)
140
200
260
mV
LIM pin input bias current
Ib (LIM)
With VCTL =5V, CTLREF : Open,
VLIM =0V
–2.5
A
LIM pin current limit level
I lim
With Rf = 0.5 ,VCTL =5V,VLIM = 2.06 V,
Hall input logic fixed, (u, v,w=H,H,L)
830
900
970
mA
[Hall Amplifier]
Hall amplifier input offset
voltage
Voff (HALL)
–6
+6
mV
Hall amplifier input bias current
Ib (HALL)
1.0
3.0
A
Hall amplifier common-mode
input voltage
Vcm (HALL)
1.3
3.3
V
[TRC]
Torque ripple correction factor
TRC
At bottom and peak in Rf waveform at IO = 200 mA
(RF=0.5 , ADJ-OPEN)
Note 2
9%
ADJ pin voltage
Vadj
2.37
2.50
2.63
V
Continued on next page.
LB1952, 1952M
No.5132 - 2/11