MIC23250-S4YMT TR Micrel Inc, MIC23250-S4YMT TR Datasheet - Page 4

• Manufacturer Part Number: MIC23250-S4YMT TR
• Description: IC BUCK SYNC 1.2V/3.3V 10TMLF
• Manufacturer: Micrel Inc
• Series: HyperLight Load™r
• Type: Step-Down (Buck)r

Specifications of MIC23250-S4YMT TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 1.2V, 3.3V
• Current - Output: 400mA
• Frequency - Switching: 4MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-TMLF®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: 576-3561-2

Absolute Maximum Ratings
Supply Voltage (V
Output Switch Voltage (V
Logic Input Voltage (V
Storage Temperature Range (T
ESD Rating
Electrical Characteristics
T
otherwise specified. Bold values indicate –40°C< T
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model: 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Micrel, Inc.
Parameter
Under-Voltage Lockout Threshold
UVLO Hysteresis
Quiescent Current
Shutdown Current
Output Voltage Accuracy
Feedback Voltage (Adj only)
Current Limit in PWM Mode
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch ON-Resistance
Frequency
Soft Start Time
Enable Threshold
Enable Input Current
Over-temperature Shutdown
Over-temperature Shutdown
Hysteresis
June 2010
A
= 25°C with V
(3)
.................................................................. 2kV
IN
IN
= V
) .........................................................6V
EN1
EN1
, V
SW
= V
) ............................................6V
EN2
EN2
) ........................ –0.3V to V
s
)..............–65°C to +150°C
= 3.6V; L = 1µH; C
Condition
(turn-on)
V
Nominal
V
V
V
SNS = 0.9*V
V
V
20mA < I
20mA < I
I
I
I
V
(4)
SW
SW
LOAD
OUT1, 2 (both Enabled)
EN1, 2
IN
IN
IN
IN
OUT
= 3.6V if V
= 4.5V if V
= 3.6V to 5.5V if V
= 4.5V to 5.5V if V
= 100mA PMOS
= -100mA NMOS
(1)
= 120mA
= 90%
= 0V; V
LOAD
LOAD
OUT NOM
< 400mA, V
< 400mA, V
OUTNOM
OUTNOM
IN
= 5.5V
, I
J
OUT
OUT1, 2
< +125°C.
< 2.5V, I
≥ 2.5V, I
OUTNOM
OUTNOM
= 4.7µF; I
IN
= 0mA , V
IN
IN
= 3.6V if V
= 5.0V if V
< 2.5V, I
≥ 2.5V, I
LOAD
LOAD
4
Operating Ratings
Supply Voltage (V
Logic Input Voltage (V
Junction Temperature (T
Thermal Resistance
OUT
= 20mA
= 20mA
SNS1,2
2mm x 2mm Thin MLF-10 (θ
2.5mm x 2.5mm Thin MLF-12 (θ
= 20mA; only one channel power is enabled, unless
LOAD
LOAD
OUTNOM
OUTNOM
>1.2 * V
= 20mA
= 20mA
< 2.5V
≥ 2.5V
OUT1, 2
IN
)......................................... 2.7V to 5.5V
EN1
J
, V
(2)
) ..................–40°C ≤ T
0.410
2.45
–2.5
–2.5
Min
0.5
EN2
) ............................. 0V to V
JA
0.720
) .........................70°C/W
2.55
0.01
0.65
Typ
260
160
0.4
0.4
0.5
0.5
0.6
0.8
0.8
0.1
60
33
40
4
JA
) ...................65°C/W
M9999-061110-E
Max
2.65
+2.5
+2.5
1.2
50
4
1
2
MIC23250
J
≤ +125°C
Units
MHz
%/V
%/V
mV
µA
µA
µA
° C
° C
µs
%
%
%
%
Ω
Ω
V
V
A
V
IN