MIC5167_12 Datasheet, PDF (4/23 Pages) Micrel Semiconductor – 1MHz, 6A, Integrated Switch, High-Efficiency, Synchronous Buck DDR Memory Terminator

Micrel, Inc.
MIC5167
Absolute Maximum Ratings^(1,2)
PV_IN to PGND.................................................... –0.3V to 6V
SV_IN to PGND..................................................–0.3V to PV_IN
V_DDQ to PGND .................................................–0.3V to PV_IN
V_SW to PGND...................................................–0.3V to PV_IN
V_EN/DLY to PGND ..............................................–0.3V to PV_IN
V_PG to PGND ...................................................–0.3V to PV_IN
PGND to SGND ............................................. –0.3V to 0.3V
Junction Temperature ................................................ 150°C
Storage Temperature Range ....................–65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
Operating Ratings⁽³⁾
Supply Voltage (PV_IN,SV_IN) .............................. 2.6V to 5.5V
Supply Voltage (V_DDQ) .......................................0.7V to PV_IN
Power-Good (PG) Voltage (V_PG)..........................0V to PV_IN
Enable Input (V_EN/DLY)...........................................0V to PV_IN
Junction Temperature (T_J) ..................–40°C ≤ T_J ≤ +125°C
Package Thermal Resistance
4mm x 4mm MLF^®-24 (θ_JC)................................14°C/W
4mm x 4mm MLF^®-24 (θ_JA)................................40°C/W
Electrical Characteristics⁽⁴⁾
SV_IN = PV_IN = V_EN/DLY = 3.3V, V_FB = V_TT = 0.6V, T_A = 25°C, unless noted. Bold values indicate –40°C< T_J < +125°C.
Parameter
Condition
Min. Typ.
Power Input Supply
Input Voltage Range (PV_IN)
Undervoltage Lockout (UVLO) Trip
Level
PV_IN Rising
2.6
2.4
2.5
UVLO Hysteresis
280
Quiescent Supply Current
Shutdown Current
V_TT Output
V_TT Output Voltage
V_FB = 0.9V (not switching)
V_EN/DLY = 0V
V_DDQ =1.2V
0.85
5
0.588 0.6
Load Regulation
V_FB =0.6V, I_OUT = -6A to +6A
0.4
Line Regulation
V_FB = 0.6V; V_IN = 2.6 to 5.5V, I_LOAD= 100mA
0.2
FB Pin Bias Current
V_FB = 0.6V
10
Enable Control
EN/DLY Threshold Voltage
1.14 1.24
EN Hysteresis
20
EN/DLY Source Current
Oscillator
V_EN/DLY = 0.5V; V_IN = 2.9V and V_IN = 5.5V
0.7
1.0
Switching Frequency
Maximum Duty Cycle
Short-Current Protection
I_OUT = 0A
V_FB ≤ 0.5V
0.8
1.0
100
Sourcing Current Limit
Internal FETs
V_FB = 0.5V
6.5
9
Top-MOSFET R_DS(ON)
V_FB = 0.5V, I_SW = 1A
30
Bottom-MOSFET R_DS(ON)
V_FB = 0.9V, I_SW = -1A
25
SW Leakage Current
PV_IN = 5.5V, V_SW = 5.5V, V_EN = 0V
V_IN Leakage Current
PV_IN = 5.5V, V_SW = 0V, V_EN = 0V
Max.
5.5
2.6
1.3
10
0.612
1.34
1.3
1.2
14
60
25
Units
V
V
mV
mA
µA
V
%
%
nA
V
mV
µA
MHz
%
A
mΩ
mΩ
µA
January 2012
4
M9999-012312-B