MIC2101 Datasheet, PDF (5/37 Pages) Micrel Semiconductor – 38V, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
MIC2101/02
Electrical Characteristics⁽⁴⁾ (Continued)
V_IN = 12V, V_OUT = 1.2V; V_BST – V_SW = 5V; T_A = 25°C, unless noted. Bold values indicate 40°C ≤ T_J ≤ +125°C.
Parameter
Condition
Min.
Typ.
Max.
Soft-Start
Soft-Start time
5
Short-Circuit Protection
Current-Limit Threshold
Short-Circuit Threshold
Current-Limit Source Current
Short-Circuit Source Current
FET Drivers
DH, DL Output Low Voltage
DH, DL Output High Voltage
DH On-Resistance, High State
DH On-Resistance, Low State
DL On-Resistance, High State
DL On-Resistance, Low State
SW, BST Leakage Current
V_FB = 0.79V
V_FB = 0V
V_FB = 0.79V
V_FB = 0V
I_SINK = 10mA
I_SOURCE = 10mA
30
14
0
23
7
9
60
80
100
27
37
47
0.1
V_PVDD  0.1V
or
V_BST  0.1V
2.1
3.3
1.8
3.3
1.8
3.3
1.2
2.3
50
Power Good (PG)
PG Threshold Voltage
PG Hysteresis
Sweep V_FB from Low to High
85
Sweep V_FB from High to Low
PG Delay Time
PG Low Voltage
Sweep V_FB from Low to High
V_FB < 90% x V_NOM, I_PG = 1mA
Thermal Protection
Over-Temperature Shutdown
T_J Rising
Over-Temperature Shutdown Hysteresis
90
95
6
100
70
200
160
7
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
3. The device is not guaranteed to function outside operating range.
4. Specification for packaged product only.
5. The application is fully functional at low V_DD (supply of the control section) if the external MOSFETs have low voltage V_TH.
Units
ms
mV
mV
µA
µA
V
V
Ω
Ω
Ω
Ω
µA
%V_OUT
%V_OUT
µs
mV
°C
°C
August 2012
5
M9999-080712-A