ATMEL U6815BM

Features
• Six High-side and Six Low-side Drivers
• Outputs Freely Configurable as Switch, Half Bridge, or H-bridge
• Capable to Switch All Kinds of Loads Such as DC Motors, Bulbs, Resistors, Capacitors
and Inductors
0.6A Continuous Current Per Switch
Low-side: RDSon < 1.5Ω Versus Total Temperature Range
High-side: RDSon < 2.0Ω Versus Total Temperature Range
Very Low Quiescent Current IS < 20 µA in Standby Mode
Outputs Short-circuit Protected
Overtemperature Prewarning and Protection
Under- and Overvoltage Protection
Various Diagnosis Functions Such as Shorted Output, Open Load, Overtemperature
and Power Supply Fail
• Serial Data Interface
• Daisy Chaining Possible
• SO28 Power Package
•
•
•
•
•
•
•
•
1. Description
Dual Hex DMOS
Output Driver
with Serial Input
Control
U6815BM
The U6815BM is a fully protected driver interface designed in 0.8-µm BCDMOS technology. It is used to control up to 12 different loads by a microcontroller in automotive
and industrial applications.
Each of the 6 high-side and 6 low-side drivers is capable of driving currents up to
600 mA. The drivers are freely configurable and can be controlled separately from a
standard serial data interface. Therefore, all kinds of loads such as bulbs, resistors,
capacitors, and inductors can be combined. The IC design especially supports the
applications of H-bridges to drive DC motors.
Protection is guaranteed for short-circuit conditions, overtemperature, under- and
overvoltage. Various diagnostic functions and a very low quiescent current in standby
mode enable a wide range of applications. The U6815BM has automotive qualification
for conducted interferences, EMC protection, and 2-kV ESD protection.
4545D–BCD–04/09
Figure 1-1.
Block Diagram
HS1
HS2
15
HS3
13
Fault
detector
12
Fault
detector
Fault
detector
HS4
HS5
3
2
Fault
detector
Fault
detector
HS6
28
5
Fault
detector
VS
10
DI
CLK
VS
26
VS
25
S
I
O
L
D
S
C
T
H
S
6
L
S
6
H
S
5
L
S
5
H
S
4
L
S
4
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
S
R
R
Osc
24
GND
7
GND
VS
CS
6
OV protection
Input Register
Ouput Register
8
GND
UV protection
Control
logic
9
GND
INH
DO
17
P
S
F
I
N
H
S
C
D
H
S
6
L
S
6
H
S
5
L
S
5
H
S
4
L
S
4
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
Thermal
protection
T
P
20
GND
Power ON
Reset
18
VCC
21
GND
22
GND
Fault
detector
Fault
detector
Fault
detector
Fault
detector
Fault
detector
23
Fault
detector
GND
19
VCC
16
LS1
2
14
LS2
11
LS3
4
1
LS4
LS5
VCC
27
LS6
U6815BM
4545D–BCD–04/09
U6815BM
2. Pin Configuration
Figure 2-1.
Pinning SO28
HS6
LS6
DI
CLK
CS
28
27
26
25
24
GND GND GND GND VCC
23
22
21
20
19
DO
INH
LS1
HS1
18
17
16
15
U6815BM
Lead frame
Table 2-1.
1
2
3
4
5
LS5
HS5
HS4
LS4
VS
6
7
8
9
GND GND GND GND
10
11
12
13
14
VS
LS3
HS3
HS2
LS2
Pin Description
Pin
Symbol
Function
1
LS5
Low-side driver output 5, power-MOS open drain with internal reverse diode, overvoltage protection by
active zenering, short-circuit protection, diagnosis for short and open load
2
HS5
High-side driver output 5, power-MOS open drain with internal reverse diode, overvoltage protection by
active zenering, short-circuit protection, diagnosis for short and open load
3
HS4
High-side driver output 4 (see pin 2)
4
LS4
Low-side driver output 4 (see pin 1)
5
VS
Power supply output stages HS4, HS5, HS6, internal supply; external connection to pin 10 necessary
6, 7, 8, 9
GND
10
VS
Ground, reference potential, internal connection to pin 20 to 23, cooling tab
Power supply output stages HS1, HS2 and HS3
11
LS3
Low-side driver output 3 (see pin 1)
12
HS3
High-side driver output 3 (see pin 2)
13
HS2
High-side driver output 2 (see pin 2)
14
LS2
Low-side driver output 2 (see pin 1)
15
HS1
High-side driver output 1 (see pin 2)
16
LS1
Low-side driver output 1 (see pin 1)
17
INH
Inhibit input, 5-V logic input with internal pull down, low = standby, high = normal operating
18
DO
Serial data output, 5-V CMOS logic level tristate output for output (status) register data, sends 16-bit
status information to the microcontroller (LSB is transferred first). Output will remain tristated unless
device is selected by CS = low, therefore, several ICs can operate on one data output line only.
19
VCC
Logic supply voltage (5V)
20, 21, 22, 23
GND
Ground (see pins 6 to 9)
24
CS
Chip select input, 5-V CMOS logic level input with internal pull-up, low = serial communication is
enabled, high = disabled
25
CLK
Serial clock input, 5-V CMOS logic level input with internal pull-down, controls serial data input
interface and internal shift register (fmax = 2 MHz)
26
DI
27
LS6
Low-side driver output 6 (see pin 1)
28
HS6
High-side driver output 6 (see pin 2)
Serial data input, 5-V CMOS logic level input with internal pull-down, receives serial data from the
control device, DI expects a 16-bit control word with LSB being transferred first
3
4545D–BCD–04/09
3. Functional Description
3.1
Serial Interface
Data transfer starts with the falling edge of the CS signal. Data must appear at DI synchronized
to CLK and is accepted on the falling edge of the CLK signal. LSB (bit 0, SRR) must be transferred first. Execution of new input data is enabled on the rising edge of the CS signal. When CS
is high, Pin DO is in tristate condition. This output is enabled on the falling edge of CS. Output
data will change their state with the rising edge of CLK and stay stable until the next rising edge
of CLK appears. LSB (bit 0, TP) is transferred first.
Figure 3-1.
Data Transfer
CS
DI
SRR
0
LS1
HS1
LS2
HS2
LS3
HS3
LS4
HS4
LS5
1
2
3
4
5
6
7
8
9
SLS1
SHS1
SLS2
SHS2
SLS3
SHS3
SLS4
SHS4
SLS5
HS5
10
LS6
11
HS6
12
OLD
13
SCT
14
SI
15
CLK
DO
Table 3-1.
Bit
4
TP
SHS5
SLS6
SHS6
SCD
INH
PSF
Input Data Protocol
Input Register
Function
0
SRR
Status register reset (high = reset; the bits PSF, SCD and overtemperature shutdown in the output
data register are set to low)
1
LS1
Controls output LS1 (high = switch output LS1 on)
2
HS1
Controls output HS1 (high = switch output HS1 on)
3
LS2
See LS1
4
HS2
See HS1
5
LS3
See LS1
6
HS3
See HS1
7
LS4
See LS1
8
HS4
See HS1
9
LS5
See LS1
10
HS5
See HS1
11
LS6
See LS1
12
HS6
See HS1
13
OLD
Open-load detection (low = on)
14
SCT
Programmable time delay for short circuit and overvoltage shutdown (short-circuit shutdown delay
high/low = 100 ms/12.5 ms, overvoltage shutdown delay high/low = 15 ms/3.5 ms
15
SI
Software inhibit; low = standby, high = normal operation
(data transfer is not affected by standby function because the digital part is still powered)
U6815BM
4545D–BCD–04/09
U6815BM
After power-on reset, the input register has the following status:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(SI)
(SCT)
(OLD)
(HS6)
(LS6)
(HS5)
(LS5)
(HS4)
(LS4)
(HS3)
(LS3)
(HS2)
(LS2)
(HS1)
(LS1)
(SRR)
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
Table 3-2.
Output Data Protocol
Bit
Output (Status) Register
0
TP
1
Status LS1
Normal operation: high = output is on, low = output is off
Open-load detection: high = open load, low = no open load (correct load condition is detected
if the corresponding output is switched off)
2
Status HS1
Normal operation: high = output is on, low = output is off
Open-load detection: high = open load, low = no open load (correct load condition is detected
if the corresponding output is switched off)
3
Status LS2
Description see LS1
4
Status HS2
Description see HS1
5
Status LS3
Description see LS1
6
Status HS3
Description see HS1
7
Status LS4
Description see LS1
8
Status HS4
Description see HS1
9
Status LS5
Description see LS1
10
Status HS5
Description see HS1
11
Status LS6
Description see LS1
12
Status HS6
Description see HS1
13
SCD
Short circuit detected: set high, when at least one output is switched off by a short-circuit
condition
14
INH
Inhibit: this bit is controlled by software (bit SI in input register) and hardware inhibit (pin 17).
High = standby, low = normal operation
15
PSF
Power supply fail: over- or undervoltage at pin VS detected
Note:
Function
Temperature prewarning: high = warning (overtemperature shut down)(1)
1. Bit 0 to 15 = high: overtemperature shutdown
5
4545D–BCD–04/09
4. Power Supply Fail
In the event of over or undervoltage at pin VS, an internal timer is started. When the overvoltage
delay time (tdOV) programmed by the SCT Bit or the undervoltage delay time (tdUV) is reached,
the power-supply fail bit (PSF) in the output register is set and all outputs are disabled. When
normal voltage is present again, the outputs are immediately enabled. The PSF bit remains high
until it is reset by the SRR bit in the input register.
5. Open-load Detection
If the open-load detection bit (OLD) is set to low, a pull-up current for each high-side switch and
a pull-down current for each low-side switch is turned on (open-load detection current IHS1-6,
ILS1-6). If VVS – VHS1-6 or VLS1-6 is lower than the open-load detection threshold (open-load condition), the corresponding bit of the output in the output register is set to high. Switching on an
output stage with OLD bit set to low disables the open-load function for this output.
6. Overtemperature Protection
If the junction temperature exceeds the thermal prewarning threshold, TjPW set, the temperature
prewarning bit (TP) in the output register is set. When temperature falls below the thermal prewarning threshold TjPW reset, the bit TP is reset. The TP bit can be read without transferring a
complete 16-bit data word: with CS = high to low, the state of TP appears at Pin DO. After the
microcontroller has read this information, CS is set high and the data transfer is interrupted without affecting the state of input and output registers.
If the junction temperature exceeds the thermal shutdown threshold Tj switch off, the outputs are
disabled and all bits in the output register are set high. The outputs can be enabled again when
the temperature falls below the thermal shutdown threshold, Tj switch on, and when a high has
been written to the SRR bit in the input register. Thermal prewarning and shutdown threshold
have hysteresis.
7. Short-circuit Protection
The output currents are limited by a current regulator. Current limitation takes place when the
over-current limitation and shutdown threshold (IHS1-6, ILS1-6) are reached. Simultaneously, an
internal timer is started. The shorted output is disabled during a permanent short when the delay
time (t dSd ) programmed by the Short-Circuit Timer (SCT) bit is reached. Additionally, the
Short-Circuit Detection (SCD) bit is set. If the temperature prewarning bit TP in the output register is set during a short, the shorted output is disabled immediately and SCD bit is set. By writing
a high to the SRR bit in the input register, the SCD bit is reset and the disabled outputs are
enabled.
7.1
Inhibit
There are two ways to disable the U6815BM:
1. Set bit SI in the input register to zero
2. Switch Pin 17 (INH) to 0V
In both cases, all output stages are turned off but the serial interface stays active. The output
stages can be activated again by bit SI = 1 or by pin 17 (INH) switched back to 5V.
6
U6815BM
4545D–BCD–04/09
U6815BM
8. Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
All values refer to GND pins.
Parameters
Pins
Symbol
Value
Unit
Supply voltage
5, 10
VVS
–0.3 to +40
V
Supply voltage, t < 0.5s; IS > –2A
Supply voltage difference
5, 10
VVS
–1
V
|VS_Pin5 – VS_Pin10|
ΔVVS
150
mV
Supply current
5, 10
IVS
1.4
A
Supply current, t < 200 ms
5, 10
IVS
2.6
A
Logic supply voltage
19
VVCC
–0.3 to +7
V
Input voltage
17
VINH
–0.3 to +17
V
24 to 26
VDI, VCLK, VCS
–0.3 to VVCC + 0.3
V
18
VDO
–0.3 to VVCC + 0.3
V
17, 24 to 26
IINH, IDI, ICLK, ICS
–10 to +10
mA
18
IDO
–10 to +10
mA
1 to 4, 11 to 16
ILS1 to ILS6
IHS1 to IHS6
Internally limited (see
output specification)
mA
27, 28
–0.3 to +40
V
IHS1 to IHS6
17
A
Junction temperature range
Tj
–40 to +150
°C
Storage temperature range
Tstg
–55 to +150
°C
Logic input voltage
Logic output voltage
Input current
Output current
Output current
Output voltage
2, 3, 12, 13, 15, 28
HS1 to HS6
1, 4, 11, 14, 16, 27
LS1 to LS6
2, 3, 12, 13, 15,
28 towards 5, 10
Reverse conducting current (tpulse = 150 µs)
mA
9. Thermal Resistance
All values refer to GND pins
Parameters
Symbol
Value
Unit
Junction - pin, measured to GND, Pins 6 to 9 and 20 to 23
RthJP
25
K/W
Junction ambient
RthJA
65
K/W
10. Operating Range
All values refer to GND pins
Parameters
Supply voltage
Logic supply voltage
Logic input voltage
Serial interface clock frequency
Pins
5, 10
VVS
19
VVCC
17, 24 to VINH, VDI, VCLK,
VCS
26
25
Junction temperature
Notes:
Symbol
Min.
VUV
4.5
–0.3
fCLK
Tj
Typ.
(1)
–40
Max.
40
5
(2)
Unit
V
5.5
V
VVCC
V
2
MHz
+150
°C
1. Threshold for undervoltage detection
2. Output disabled for VVS > VOV (threshold for overvoltage detection)
7
4545D–BCD–04/09
11. Noise and Surge Immunity
Parameters
Test Conditions
Conducted interferences
ISO 7637-1
Interference suppression
VDE 0879 Part 2
ESD (human body model)
MIL-STD-883D Method 3015.7
2 kV
ESD (machine model)
EOS/ESD - S 5.2
150V
Note:
Value
level 4 (1)
level 5
1. Test pulse 5: VSmax = 40V
12. Electrical Characteristics
7.5V < VVS < 40V; 4.5V < VVCC < 5.5V; INH = High; –40°C < Tj < 150°C; unless otherwise specified, all values refer to GND pins.
Parameters
Test Conditions/Pins
Symbol
Min.
Typ.
Max.
Unit
Current Consumption
Quiescent current (VS)
VVS < 16V, INH or bit SI = low
Pins 5, 10
IVS
40
µA
Quiescent current (VCC)
4.5V < VVCC < 5.5V,
INH or bit SI = low, pin 19
IVCC
20
µA
VVS < 16V, pins 5, 10
all output stages off
IVS
1.2
mA
All output stages on, no load
IVS
10
mA
4.5V < VVCC < 5.5V,
normal operating, pin 19
IVCC
150
µA
45
kHz
Supply current (VS)
normal operating
Supply current (VCC)
0.8
Internal Oscillator Frequency
Frequency
(time-base for delay timers)
fOSC
19
Over- and Undervoltage Detection, Power-on Reset
Power-on reset threshold
Pin 19
VVCC
3.4
3.9
4.4
V
Power-on reset delay time
After switching on VVCC
tdPor
30
95
160
µs
Undervoltage detection threshold
Pins 5, 10
VUV
5.5
7.0
V
Undervoltage detection hysteresis
Pins 5, 10
ΔVUV
0.4
V
tdUV
7
21
ms
Overvoltage detection threshold
Pins 5, 10
VOV
18
22.5
V
Overvoltage detection hysteresis
Pins 5, 10
ΔVOV
Overvoltage detection delay
Input register, Bit 14 (SCT) = high
tdOV
7
21
ms
Overvoltage detection delay
Input register, Bit 14 (SCT) = low
tdOV
1.75
5.25
ms
TjPWset
125
145
165
°C
TjPWreset
105
125
145
°C
Undervoltage detection delay
1
V
Thermal Prewarning and Shutdown
Thermal prewarning, set
Thermal prewarning, reset
Thermal prewarning hysteresis
ΔTjPW
20
K
Thermal shutdown, off
Tj switch off
150
170
190
°C
Thermal shutdown, on
Tj switch on
130
150
170
°C
Thermal shutdown hysteresis
ΔTj switch off
Notes:
20
K
1. Only valid for version U6815BM-N.
2. Delay time between rising edge of CS after data transmission and switch-on output stages to 90% of final level.
8
U6815BM
4545D–BCD–04/09
U6815BM
12. Electrical Characteristics (Continued)
7.5V < VVS < 40V; 4.5V < VVCC < 5.5V; INH = High; –40°C < Tj < 150°C; unless otherwise specified, all values refer to GND pins.
Parameters
Test Conditions/Pins
Symbol
Min.
Typ.
Ratio thermal shutdown, off/thermal
prewarning, set
Tj switch off/
TjPW set
1.05
1.17
Ratio thermal shutdown, on/thermal
prewarning, reset
Tj switch on/
TjPW reset
1.05
1.2
Max.
Unit
Output Specification (LS1 to LS6, HS1 to HS6), 7.5V < VVS < VOV
On resistance, low
IOut = 600 mA,
Pins 1, 4, 11, 14, 16 and 27
RDS On L
1.5
Ω
On resistance, high
IOut = –600 mA,
Pins 2, 3, 12, 13, 15 and 28
RDS On H
2.0
Ω
Output clamping voltage
ILS1–6 = 50 mA,
Pins 1, 4, 11, 14, 16, 27
VLS1–6
60
V
VLS1–6 = 40V, all output stages off,
Pins 1, 4, 11, 14, 16 and 27
ILS1–6
10
µA
VHS1–6 = 0V, all output stages off,
Pins 2, 3, 12, 13, 15 and 28
IHS1–6
Inductive shutdown energy(1)
Pins 1-4, 11-16, 27 and 28
Woutx
Output voltage edge steepness
Pins 1-4, 11-16, 27 and 28
dVLS1–6/dt
dVHS1–6/dt
50
Overcurrent limitation and shutdown
threshold
Pins 1, 4, 11, 14, 16 and 27
ILS1–6
Pins 2, 3, 12, 13,15 and 28
Output leakage current
Overcurrent shutdown delay time
Open-load detection current
–10
µA
15
mJ
200
400
mV/µ
s
650
950
1250
mA
IHS1–6
–1250
–950
–650
mA
Input register, bit 14 (SCT) = high
tdSd
70
100
140
ms
Input register, bit 14 (SCT) = low
tdSd
8.75
17.5
ms
Input register, bit 13 (OLD) = low,
output off, pins 1, 4, 11, 14, 16, 27
ILS1–6
60
200
µA
Input register, bit 13 (OLD) = low,
output off, pins 2, 3, 12, 13, 15, 28
IHS1–6
–150
–30
µA
ILS1–6/
IHS1–6
1.2
Input register, bit 13 (OLD) = low,
output off, pins 1, 4, 11, 14, 16, 27
VLS1–6
0.6
4
V
Input register, bit 13 (OLD) = low,
output off, pins 2, 3, 12, 13, 15, 28
VVS–
VHS1–6
0.6
4
V
Open-load detection current ratio
Open-load detection threshold
40
RLoad = 1 kΩ
tdon
0.5
ms
RLoad = 1 kΩ
tdoff
1
ms
Input voltage low level threshold
Pin 17
VIL
Input voltage high level threshold
Pin 17
VIH
Hysteresis of input voltage
Pin 17
ΔVI
Pull-down current
VINH = VVCC, pin 17
IPD
Output switch on delay (2)
Inhibit Input
Notes:
0.3 ×
VVCC
V
0.7×
VVCC
V
100
700
mV
10
80
µA
1. Only valid for version U6815BM-N.
2. Delay time between rising edge of CS after data transmission and switch-on output stages to 90% of final level.
9
4545D–BCD–04/09
12. Electrical Characteristics (Continued)
7.5V < VVS < 40V; 4.5V < VVCC < 5.5V; INH = High; –40°C < Tj < 150°C; unless otherwise specified, all values refer to GND pins.
Parameters
Test Conditions/Pins
Symbol
Min.
0.3 ×
VVCC
Typ.
Max.
Unit
Serial Interface - Logic Inputs (DI, CLK, CS)
Input voltage low level threshold
Pins 24 to 26
VIL
Input voltage high level threshold
Pins 24 to 26
VIH
Hysteresis of input voltage
Pins 24 to 26
ΔVI
Pull-down current, Pins DI and CLK
VDI, VCLK = VVCC, pins 25, 26
IPDSI
Pull-up current Pin CS
VCS= 0V, pin 24
IPUSI
IOL = 3 mA, pin 18
VDOL
V
0.7 ×
VVCC
V
50
500
mV
2
50
µA
–50
–2
µA
0.5
V
Serial Interface - Logic Output (DO)
Output voltage low level
Output voltage high level
IOL = –2 mA, pin 18
Leakage current (tristate)
VCS = VVCC, 0V < VDO < VVCC, pin 18
Notes:
VDOH
VVCC –
1V
IDO
–10
V
10
mA
1. Only valid for version U6815BM-N.
2. Delay time between rising edge of CS after data transmission and switch-on output stages to 90% of final level.
13. Serial Interface – Timing
Timing Chart No.(1)
Symbol
CDO = 100 pF
1
DO disable after CS
rising edge
CDO = 100 pF
DO fall time
Parameters
Test Conditions
DO enable after CS
falling edge
Max.
Unit
tENDO
200
ns
2
tDISDO
200
ns
CDO = 100 pF
–
tDOf
100
ns
DO rise time
CDO = 100 pF
–
tDOr
100
ns
DO valid time
CDO = 100 pF
10
tDOVal
4
tCSSethl
225
ns
VDO < 0.2 × VVCC
8
tCSSetlh
225
ns
Input register,
Bit 14 (SCT) = high
9
tCSh
140
ns
Input register,
Bit 14 (SCT) = low
9
tCSh
17.5
ns
CLK high time
5
tCLKh
225
ns
CLK low time
6
tCLKl
225
ns
CLK period time
–
tCLKp
500
ns
CLK setup time
7
tCLKSethl
225
ns
CLK setup time
3
tCLKSetlh
225
ns
DI setup time
11
tDIset
40
ns
tDIHold
40
ns
CS setup time
CS setup time
CS high time
DI hold time
Note:
10
12
Min.
Typ.
200
ns
1. see Figure 13-1 on page 11
U6815BM
4545D–BCD–04/09
U6815BM
Figure 13-1. Serial Interface Timing Diagram with Chart Numbers
2
1
CLK
DO
9
CS
4
7
CLK
5
3
6
8
DI
11
CLK
10
12
DO
Inputs DI, CLK, CS: High level = 0.7 × VCC, Low level = 0.3 × VCC
Output DO: High level = 0.8 × VCC, Low level = 0.2 × VCC
For chart numbers, see Table “Serial Interface – Timing” on page 10.
11
4545D–BCD–04/09
Figure 13-2. Application Circuit
M
Enable
HS1
HS2
HS3
HS4
HS5
HS6
15
13
12
3
2
28
VS
Trigger
Reset
U5021M
Watchdog
Fault
detector
Fault
detector
Fault
detector
Fault
detector
Fault
detector
BYT41D
5
Fault
detector
VS
10
26
13V
VS
VS
DI
25
S
I
CLK
S
C
T
O
L
D
H
S
6
L
S
6
H
S
5
L
S
5
H
S
4
L
S
4
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
S
R
R
L
S
1
17
P
S
F
I
N
H
S
C
D
H
S
6
L
S
6
H
S
5
L
S
5
H
S
4
L
S
4
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
GND
8
UV protection
Control
logic
Ouput Register
INH
GND
7
Input Register
24
CS
6
OV protection
Osc
VS
Microcontroller
VBatt
+
GND
9
Thermal
protection
T
P
Power ON
Reset
18
DO
VCC
GND
20
GND
21
GND
22
GND
Fault
detector
Fault
detector
Fault
detector
Fault
detector
Fault
detector
23
Fault
detector
GND
19
VCC
VCC
16
14
11
4
1
27
LS1
LS2
LS3
LS4
LS5
LS6
M
VCC
VCC
VCC
+
5V
M
VS
VS
14. Application Notes
It is strongly recommended to connect the blocking capacitors at VCC and VS as close as possible to the power supply and GND pins.
Recommended value for capacitors at VS:
Electrolythic capacitor C > 22 µF in parallel with a ceramic capacitor C = 100 nF. Value for electrolytic capacitor depends on external loads, conducted interferences, and reverse conducting
current IHSx (see table Absolute Maximum Ratings).
Recommended value for capacitors at VCC:
Electrolythic capacitor C > 10 µF in parallel with a ceramic capacitor C = 100 nF. To reduce thermal resistance, it is recommended to place cooling areas on the PCB as close as possible to the
GND pins.
12
U6815BM
4545D–BCD–04/09
U6815BM
15. Ordering Information
Extended Type Number
Package
Remarks
U6815BM-NFLY
SO28
Tubed, Pb-free
U6815BM-NFLG3Y
SO28
Taped and reeled, Pb-free
16. Package Information
Package SO28
Dimensions in mm
9.15
8.65
18.05
17.80
7.5
7.3
2.35
0.25
0.25
0.10
0.4
1.27
10.50
10.20
16.51
28
15
technical drawings
according to DIN
specifications
1
14
17. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision
mentioned, not to this document.
Revision No.
History
4545D-BCD-04/09
• Put datasheet in a new template
• Absolute Maximum Ratings table changed
4545C-BCD-09/05
•
•
•
•
Put datasheet in a new template
Pb-free logo on page 1 added
New heading rows on Table “Absolute Maximum Ratings” on page 7 added
Table “Ordering Information” on page 13 changed
13
4545D–BCD–04/09
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4545D–BCD–04/09