MIC2185YQS Micrel Inc, MIC2185YQS Datasheet - Page 5

• Manufacturer Part Number: MIC2185YQS
• Description: SO-16 Low Vin Synchronous Buck PWM Control IC ( )
• Manufacturer: Micrel Inc

Specifications of MIC2185YQS

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 440kHz
• Duty Cycle: 95%
• Voltage - Supply: 2.9 V ~ 14 V
• Buck: No
• Boost: Yes
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-QSOP
• Frequency-max: 440kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-2162; MIC2185YQS

Typical Characteristics
October 2005
1.2470
1.2469
1.2468
1.2467
1.2466
1.2465
1.2464
1.2463
1.2462
1.2461
1.2460
3.040
3.035
3.030
3.025
3.020
3.015
3.010
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
-40 -20 0 20 40 60 80 100120140
0
0
0 10 20 30 40 50 60 70 80 90 100
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Input Voltage( PWM Mode)
Temperature (SKIP Mode)
V
V
I
f
Q
S
IN
IN
REFERENCE CURRENT (µA)
vs. Reference Current
Quiescent Current vs.
Quiescent Current vs.
= 400kHz
= I
2
A = 5V
P = 12V
INPUT VOLTAGE (V
Reference Voltage
TEMPERATURE (°C)
QVINA
4
Load Current
DC
DC
VDD vs.
+ I
I
6
VDD
V
V
I
QVINP
Q
IN
IN
8 10 12 14 16
= I
P = 12V
A = 5V
(mA)
V
V
IN
QVINA
IN
V
P = 12V
A = 5V
V
V
IN
IN
IN
DC
P = 12V
+I
P = 5V
DC
P = 9V
INA
QVINP
DC
)
DC
1.257
1.255
1.253
1.251
1.249
1.247
1.245
1.243
1.241
1.239
1.237
3.08
3.07
3.06
3.05
3.04
3.03
3.02
3.01
3.00
2.99
2.98
0.80
0.70
0.60
4.75
4.70
4.65
4.60
4.55
4.50
4.45
4.40
4.35
4.30
0.75
0.65
0.55
-40 -20 0 20 40 60 80 100120140
0
Temperature (PWM Mode)
Input Voltage (SKIP Mode)
V
V
V
V
V
f
I
S
Q
IN
IN
IN
IN
IN
Quiescent Current vs.
Quiescent Current vs.
= 400kHz
= I
2
A = 5V
P = 5V
P = 12V
A = 5V
P = 12V
INPUT VOLTAGE (V
Reference Voltage
QVINA
TEMPERATURE(°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
vs. Temperature
V
4
Temperature
IN
P = 12V
DC
DC
DC
+I
VDD vs.
DC
DC
6
QVINP
5
8 10 12 14 16
V
V
DC
IN
IN
V
P = 12V
A = 5V
IN
P = 9V
INA
DC
)
DC
DC
1.2475
1.2465
1.2455
1.247
1.246
1.245
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
300
250
200
150
100
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
50
0
0
0
0
0
0
Input Voltage(PWM Mode)
V
I
V
V
Q
IN
IN
IN
Quiescent Current vs.
= I
2
I
2
P =12V
2
P = 12V
A = 5V
2
ENABLE
INPUT VOLTAGE (V
INPUT VOLTAGE (V
INPUT VOLTAGE (V
Reference Voltage
QVINA
vs. Input Voltage
4
4
Input Voltage
4
4
DC
V
+I
DC
VDD vs.
6
DC
6
ENABLE
QVINP
6
6
20°C
vs. V
8 10 12 14 16
8 10 12 14 16
V
V
8
8
IN
IN
(V)
ENABLE
P = 12V
P = 12V
10
10
200kHz
–40°C
400kHz
INA
INA
INA
12
12
85°C
)
)
)
DC
DC
MIC2185
14
14