MIC38HC42/3/4/5
Micrel, Inc.
Parameter
Test Conditions
Min
Typ
Max
Units
Current Sense
Gain
Notes 2, 3
2.85
0.9
3.0
1
3.15
1.1
V/V
V
MaximumThreshold
PSRR
VCOMP = 5V, Note 2
12 ≤ VDD ≤ 18V, Note 2
70
dB
µA
ns
Input Bias Current
Delay to Output
Output
–0.1
120
–2
250
RDS(ON) ‘HC’ High
RDS(ON) ‘HC’ Low
ISOURCE = 200mA
ISINK = 200mA
10
Ω
Ω
5.5
Rise Time
TA = 25°C, CL = 1nF
TA = 25°C, CL = 1nF
20
15
50
40
ns
ns
Fall Time
Undervoltage Lockout
Start Threshold
MIC38HC42/4
MIC38HC43/5
MIC38HC42/4
MIC38HC43/5
13.5
7.8
8
14.5
8.4
9
15.5
9.0
10
V
V
V
V
Minimum Operating Voltage
7.0
7.6
8.2
Pulse Width Modulator
Maximum Duty Cycle
MIC38HC42/3
MIC38HC44/5
94
46
96
50
%
%
%
Minimum Duty Cycle
Total Standby Current
Start-Up Current
0
VDD = 13V, 38HC42/44
VDD = 7.5V, 38HC43/45
50
200
6.0
µA
Operating Supply Current
VFB = VISNS = 0V
4.0
37
mA
V
Zener Voltage (VDD
)
IDD = 25mA, Note 6
30
Note 1: These parameters, although guaranteed, are not 100% tested in production.
Note 2: Parameter measured at trip point of latch with V = 0.
EA
Note 3: Gain defined as:
∆ VPIN1
A =
; 0 ≤ VTH (ISNS) ≤ 0.8V
VTH (ISNS
)
Note 4: Adjust V above the start threshold before setting at 15V.
DD
Note 5: Output frequency equals oscillator frequency for the MIC38HC42 and MIC38HC43. Output frequency for the MIC38HC44, and
MIC38HC45 equals one half the oscillator frequency.
Note 6: On 8-pin version, 20V is maximum input on pin 7, as this is also the supply pin for the output stage. On 14-pin version, 40V is
maximum for pin 12 and 20V maximum for pin 11.
April 2005
5
M9999-042205
MICREL [ MICREL SEMICONDUCTOR ]
