MIC2128 Datasheet, PDF (5/32 Pages) Microchip Technology – 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start

MIC2128
ELECTRICAL CHARACTERISTICS (Note 1)
Electrical Specifications: unless otherwise specified, V_IN = 12V, V_OUT = 1.2V; V_BST - V_SW = 5V, T_A = +25°C.
Boldface values indicate -40°C  T_J  +125°C (Note 2).
Parameter
Symbol
Min. Typ. Max. Units
Test Conditions
FET Drivers
DH On-Resistance, High
State
R_DH(PULL-UP)
—
2
3

DH On-Resistance, Low
RDH_{(PULL_DOWN)} —
2
4

State
DL On-Resistance, High
State
R_DL(PULL-UP)
—
2
4

DL On-Resistance, Low State R_{DL(PULL_DOWN)} —
0.36 0.6

SW, VIN and BST Leakage
BST Leakage
V_IN Leakage
SW Leakage
—
—
—
30
µA
—
—
—
50
µA
—
—
—
50
µA
Power Good (PG)
PG Threshold Voltage
PG Hysteresis
PG Delay Time
PG Low Voltage
Thermal Protection
V_{PG_Rise}
V_{PG_Hys}
PG_R_DLY
V_{OL_PG}
85
—
95 %V_OUT V_FB rising
—
6
— %V_OUT V_FB falling
—
100
—
µs V_FB rising
—
70
200
mV V_FB < 90% × V_NOM, I_PG = 1 mA
Overtemperature Shutdown
Overtemperature Shutdown
Hysteresis
T_SHDN
T_{SHDN_Hys}
—
150
—
°C Junction temperature rising
—
15
—
°C
Note 1:
2:
Specification for packaged product only.
The application is fully functional at low V_DD (supply of the control section) if the external MOSFETs have
low voltage V_TH.
 2016 Microchip Technology Inc.
DS20005620A-page 5