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E-L9935013TR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29
Electrical specifications L9935
10/29 Doc ID 5198 Rev 10
I
HIGH
High input current V
High
= V
CC
-10 0 10 A
I
Low
Low input current V
Low
= 0 V -3 -10 -30 A
Logic outputs (SDO)
V
SDO,High
High output voltage I
SDO
= -1 mA V
CC
-1
V
CC
-
0.17
V
CC
V
V
SDO,Low
Low output voltage I
SDO
= 1 mA - 0.17 1 V
Oscillator
V
OSC, H
High peak voltage EN = LOW 2.2 2.46 2.6 V
V
OSC, L
Low peak voltage EN = LOW 1 1.23 1.4 V
I
OSC
Charging/discharging current - 45 62 80 A
f
OSC
Oscillator frequency C
OSC
= 1 nF 20 25 31 kHz
t
Start
Oscillator startup time EN = High Low 2/f
osc
5/f
osc
8/f
osc
Thermal protection
T
J-OFF
Thermal shut-down - 160 180 200 °C
Temperature - - - -
T
J-ALM
Thermal pre alarm - 130 160 - °C
T
MGN
Margin pre alarm/shut-down - 10 20 30 K
1. Currents of combinations LH and LL are sensed at the external resistors. The Current of bit combination HL is sensed
internally and cannot be adjusted by changing the sense resistors.
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
L9935 Application hints
Doc ID 5198 Rev 10 11/29
4 Application hints
Figure 3. General application circuit proposal
C1 and C2 should be placed as close to the device as possible. Low ESR of C2 is
advantageous. Peak currents through C1 and C2 may reach 2 A. Care should be taken that
the resonance of C1, C2 together with supply wire inductances is not the chopping
frequency or a multiple of it.
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Functional description L9935
12/29 Doc ID 5198 Rev 10
5 Functional description
5.1 Basic structure
The L9935 is a dual full bridge driver for inductive loads with a chopper current regulation.
Outputs A1 and A2 belong to full bridge A Outputs B1 and B2 belong to full bridge B.
The polarity of the bridges can be controlled by bit0 and bit3 (for full bridge A, bit3, for full
bridge B, bit0). Bit5, bit4 (for full bridge A) and bit2, bit1 (for full bridge B) control the
currents. Bit3 high leads to output A1 high. Bit0 high leads to output B1 high.
Current setting Ta bl e 6 using a 0.33 sense resistor.
Figure 4. Typical average load current dependence on R
Sense
Table 6. Current setting
bit5, bit2 bit4, bit1 I
QX
(Typ.) I
RX/max
Remark
H H 0 0 % -
H L 60 mA - internally sensed
L H 550 mA 61 % -
L L 900 mA 100 % -
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TYPICALCURRENTLIMITATIONOFHIGHSIDETRANSISTOR
LIMITRECOMMENDEDFORUSUALAPPLICATION
7
2
SUGGESTEDRANGEOFOPERATION
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E-L9935013TR

Mfr. #:
Buy E-L9935013TR
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers 2-Ph Stepper Motor
Lifecycle:
New from this manufacturer.
Delivery:
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