MIC3172YN Micrel Inc, MIC3172YN Datasheet - Page 6

• Manufacturer Part Number: MIC3172YN
• Description: IC REG SW 100KHZ 1.25A 8-DIP
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Cukr

Specifications of MIC3172YN

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 1.25A
• Frequency - Switching: 100kHz
• Voltage - Input: 3 ~ 40 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Power - Output: 302mW
• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Current: 3A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Supply Voltage Range: 3V To 40V
• Termination Type: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 576-2255; MIC3172YN

Typical Characteristics MIC3172 (cont)
Bold type denotes specifications applicable to the full operating temperature range.
Note 1. Devices are ESD sensitive. Handling precautions required.
Note 2. For duty cycles (δ) between 50% and 95%, minimum guaranteed switch current is given by I
Note 3. Specification for packaged product only.
Micrel
Parameter
Oscillator Section
Frequency (f
Duty Cycle [δ(max)]
Sync Coupling Capacitor
Required for Frequency
Lock
Input Supply Voltage Section and Enable Section
Minimum Operating
Voltage
Quiescent Current (I
Supply Current Increase
(∆I
Enable Input Threshold
Enable Input Current
April 2006
IN
)
O
)
Q
)
Condition
V
V
3V ≤ V
∆I
V
V
PP
PP
EN
EN
SW
= 3.0V
= 40V
= 0V
= 2.4V
= 1A, V
IN
≤ 40V, V
COMP
COMP
= 1.5V
= 0.6V, I
SW
= 0
6
CL
= 0.833 (2- δ) for the MIC3172.
Min
2.2
0.4
88
85
80
22
–1
Typ
100
4.7
2.7
1.2
89
51
7
9
0
2
MIC2172/3172
Max
112
115
120
3.0
2.4
[phone]
95
10
20
10
M9999-041806
9
1
Units
kHz
kHz
mA
mA
µA
µA
pF
pF
%
V
V