MIC2185YQS Micrel Inc, MIC2185YQS Datasheet - Page 3

• 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

Absolute Maximum Ratings (Note 1)
Supply Voltage (V
Digital Supply Voltage (V
Skip Pin Voltage (V
Comp Pin Voltage (V
Feedback Pin Voltage (V
Enable Pin Voltage (V
Current Sense Voltage (V
Sync Pin Voltage (V
Freq/2 Pin Voltage (V
Power Dissipation (P
Ambient Storage Temp ............................. –65°C to +150°C
Electrical Characteristics
V
indicate –40°C < T
Parameter
Regulation
Feedback Voltage Reference
Feedback Bias Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Input & V
V
V
V
Shutdown Quiescent Current
Digital Supply Voltage (VDD)
Digital Supply Load Regulation
Undervoltage Lockout
Reference Output (V
Reference Voltage
Reference Voltage Line
Regulation
Reference Voltage Load
Regulation
Enable/UVLO
Enable Input Threshold
UVLO Threshold
UVLO Hysteresis
Enable Input Current
October 2005
IN
IN
IN
IN
16 lead SOP ...................................400mW @ T
16 lead QSOP .................................245mW@ T
A= 5V, VinP= V
A Input Current, PWM mode
P Input Current, PWM mode
A Input Current, SKIP mode
DD
Supply
J
OUT
IN
< +125°C.
SKIP
REF
A, V
SYNC
=12V, V
COMP
D
FREQ/2
)
EN/UVLO
)
) ....................................–0.3V to 7V
IN
DD
FB
) ................................–0.3V to 7V
CSH
P) .......................................... 15V
) ...............................–0.3V to 3V
) ..............................–0.3V to 3V
EN/UVLO
) ............................................ 7V
) .............................–0.3V to 7V
) ..........................–0.3V to 1V
) .......................–0.3V to 15V
Condition
(±1%)
(±2%)
3V ≤ V
3V ≤ V
0mV ≤ CSH ≤ 75mV
V
V
V
V
I
I
V
V
(±1.5%)
(±2.5%)
5V < VinA < 9V
0 < I
V
L
L
SKIP
SKIP
SKIP
EN/UVLO
DD
DD
EN/UVLO
= 0
= 0 to 0.5mA
= 5V, V
REF
upper threshold (turn on threshold)
lower threshold (turn off threshold)
= 0V
= 0V (excluding external MOSFET gate current)
= 5V
IN
IN
A ≤ 9V; 0mV ≤ CSH ≤ 75mV; (±3%)
A ≤ 9V
< 100µA
SKIP
= 0V; (I
= 5V
= 0V, V
VINA
A
A
= 85°C
= 85°C
FREQ/2
+ I
VINP
)
= 0V, V
3
Operating Ratings
Supply Voltage (V
Operating Ambient Temperature ...........–40°C ≤ T
Junction Temperature .........................–40°C ≤ T
PackageThermal Resistance
ESD Rating, Note 3
CSH
θ
θ
JA
JA
16-lead SOP ................................................ 100°C/W
16-lead QSOP ............................................. 163°C/W
= 0V, T
J
= 25°C, unless otherwise specified. Bold values
IN
A, V
IN
P) ......................... +2.9V to +14V
(Note 2)
1.233
1.220
1.208
1.226
1.213
Min
2.8
2.9
0.6
1.4
1.245
1.245
+0.08
1.245
–1.2
0.03
2.75
2.65
Typ
140
0.8
3.8
0.6
0.5
3.0
0.9
1.5
0.2
50
2
1
1.258
1.270
1.282
1.264
1.276
Max
3.2
1.2
1.6
5
J
A
≤ +125°C
MIC2185
≤ +85°C
Units
% / V
mA
mA
mA
mV
mV
mV
nA
µA
µA
%
V
V
V
V
V
V
V
V
V
V
V