MIC38C45ABMM Micrel Inc, MIC38C45ABMM Datasheet - Page 5

• Manufacturer Part Number: MIC38C45ABMM
• Description: IC CTRLR PWM CURRENT MODE 8-MSOP
• Manufacturer: Micrel Inc

Specifications of MIC38C45ABMM

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 50%
• Voltage - Supply: 7.6 V ~ 20 V
• Buck: Yes
• Boost: Yes
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MIC38C42A/43A/44A/45A
Parameter
Current Sense
Gain
MaximumThreshold
PSRR
Input Bias Current
Delay to Output
Output
R
R
Rise Time
Fall Time
Undervoltage Lockout
Start Threshold
Minimum Operating Voltage
Pulse Width Modulator
Maximum Duty Cycle
Minimum Duty Cycle
Total Standby Current
Start-Up Current
Operating Supply Current
Note 1: These parameters, although guaranteed, are not 100% tested in production.
Note 2: Parameter measured at trip point of latch with V
Note 3: Gain defined as:
Note 4: Adjust V
Note 5: Output frequency equals oscillator frequency for the MIC38C42 and MIC38C43. Output frequency for the MIC38C44A, and
Note 6: Specification for packaged product only.
April 2005
DS(ON)
DS(ON)
A =
High
Low
MIC38C45A equals one half the oscillator frequency.
V
TH
∆
V
(I
PIN1
DD
SNS
above the start threshold before setting at 15V.
)
;
0
≤
V
TH
(I
SNS
Test Conditions
Notes 2, 3
V
12 ≤ V
I
I
T
T
MIC38C42A/4A
MIC38C43A/5A
MIC38C42A/4A
MIC38C43A/5A
MIC38C42A/3A
MIC38C44A/5A
V
V
V
SOURCE
SINK
A
A
COMP
DD
DD
FB
= 25°C, C
= 25°C, C
)
= V
= 13V for MIC38C42A/44A
= 7.5V for MIC38C43A/45A
= 200mA
≤
DD
= 5V, Note 2
ISNS
0.8V
= 200mA
≤ 18V, Note 2
= 0V
L
L
= 1nF
= 1nF
EA
= 0.
5
2.85
13.5
Min
0.9
7.8
7.0
94
46
8
–0.1
14.5
Typ
100
120
8.4
7.6
3.0
4.0
96
70
20
11
40
30
50
9
1
Max
3.15
15.5
250
230
1.1
9.0
8.2
6.0
–2
80
60
10
M9999-042205
0
Micrel, Inc.
Units
V/V
mA
dB
µA
µA
ns
ns
ns
%
%
Ω
Ω
%
V
V
V
V
V