MIC4807 Datasheet, PDF (2/8 Pages) Micrel Semiconductor – 80V 8-Channel Addressable Low-Side Driver

MIC4807
General Description (Continued)
turned on simultaneously, Gray Code address sequencing
can be applied to Ain, Bin, Cin, while Data-in is held high and
CS is held low. Data-in will be transferred to each address in
turn, without the need to toggle CS. Similarly, a set of outputs
could be simultaneously turned off by setting Data-in low.
Gray Code ensures that no intermediate addresses are
inadvertently accessed. A typical Gray Code is 0, 1, 3, 2, 6,
7, 5, 4.
Each output drive circuit has a high-voltage, power DMOS
device configured as a transconductance loop. This loop
limits the output current to typically 200mA. While current
limiting keeps the output device within its allowable safe-
operating area (SOA), the power dissipation may be exces-
sive. Long-term survival is guaranteed by thermal shutdown.
Micrel
When operated below current limit, the outputs appear as
small-valued resistors (typically 5.1Ω at 25°C) connected to
ground. The "ON" resistance (R_ON) has a strong, positive
temperature coefficient (approximately 7500 ppm/°C) which
promotes current sharing if two or more outputs are paral-
leled.
Absolute Maximum Ratings (Notes 1, 2 and 3)
Output Voltage (V_OUT, OFF)
100V
Supply Voltage (V_DD)
16.5V
Logic Input Voltage (V_IN)
–0.3V TO V_DD + 0.3
Continuous Output Current (I_OUT)
Internally Limited
Power Dissipation (P_D, Note 2)
Internally Limited
Ambient Temperature (T_A):
–40°C to +85°C
Maximum Junction Temperature (T_JMAX)
150°C
Storage Temperature
–65°C to +150°C
θ_JA - Plastic DIP
130°C/W
Electrical Characteristics: (Note 6) MIC4807BN, T_A = 25°C, V_DD = 15V unless otherwise specified (see
Test Circuit).
Symbol
V_DD
I_DD
Parameter
Supply Voltage
Supply Current
V_IN (0)
V_IN (1)
I_IN (0)
I_IN (1)
I_OUT
R_ON
I_SC
Logic Input Voltage
Logic Input Current for A_IN,
B_IN, C_IN, and Data-in
Logic Input Current for CS,
OE, and Clear
Output Leakage Current
Output "ON" Resistance
Short Circuit Current
V_OUT
V_OUT
Output Voltage (OFF)
Output Voltage (ON)
Data and Address
Set-up Time
Data and Address
Hold Time
CS Pulse Width
Turn-on Delay
Conditions
OE = L (Note 3)
OE = H (Note 4)
4.5V ≤ V_DD ≤ 16V
V_IN = 0V
Min
Typ
Max
Units
4.5
16
V
5.5
10
mA
1.5
3
mA
0.8
V
2.0
V
–150
–70
–25
µA
V_IN = V_DD
25
130
250
µA
OE = 0V, V_OUT = 80V
1
10
µA
Output is ON, V_OUT = 0.7V,V_DD = 10V
5.1
7
Ω
Output is ON< V_OUT = 50V
10V ≤ V_DD ≤ 15V (Note 5)
140
190
250
mA
80
V
I_OUT = 50mA,V_DD = 10V
I_OUT = 100mA, V_DD = 10V
0.26
0.35
V
0.51
0.7
V
V_DD = 10V for all timing tests
400
ns
(A, see Timing Diagram)
(B)
50
ns
(C)
500
ns
(D)
2.5
ns
7-4
October 1998