MIC26400_11 Datasheet, PDF (4/27 Pages) Micrel Semiconductor – 5A Hyper Speed Control Synchronous DC/DC Buck Regulator

Micrel, Inc.
MIC26400
Electrical Characteristics⁽⁵⁾ (Continued)
PV_IN = V_IN =12V, V_DD = 5V; 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. Units
Short Circuit Protection
Current-Limit Threshold
Short Circuit Current
Internal FETs
V_FB = 0.8V
V_FB = 0V
6
13
A
6
A
Top-MOSFET R_{DS (ON)}
Bottom-MOSFET R_{DS (ON)}
SW Leakage Current
V_IN Leakage Current
Thermal Protection
I_SW = 1A
I_SW = 1A
V_IN = 26V, V_SW = 26V, V_EN = 0V, V_BST = 31.5 V
V_IN = 26V, V_SW = 0V, V_EN = 0V, V_BST = 31.5V
43
mΩ
12.5
mΩ
60
µA
25
µA
Over-temperature Shutdown
Over-temperature Shutdown
Hysteresis
T_J Rising
155
°C
10
°C
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. PD_(MAX) = (T_J(MAX) – T_A)/ θ_JA, where θ_JA depends upon the printed circuit layout. See “Applications Information.”
5. Specification for packaged product only.
6. Measured in test mode.
7. The maximum duty-cycle is limited by the fixed mandatory off-time t_OFF of typically 360ns.
July 2011
4
M9999-070111-C