ISL78229 Datasheet, PDF (14/71 Pages) Intersil Corporation – 2-Phase Boost Controller with Drivers

ISL78229
Electrical Specifications Refer to Figure 3 on page 7 and Typical Application Schematics (page 8). Operating conditions unless
otherwise noted: VIN = 12V, V_PVCC = 5.2V, and V_VCC = 5.2V, T_A = -40°C to +125°C (Note 8). Typicals are at T_A = +25°C.
Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNIT
Undervoltage Threshold Hysteresis
4
%
POWER-GOOD MONITOR (PGOOD Pin)
PGOOD Leakage Current
PGOOD Low Voltage
PGOOD Rising Delay (DE mode)
PGOOD HIGH, V_PGOOD = 5V
PGOOD LOW, I_PGOOD = 0.5mA
The PGOOD rising delay from V_SSPIN =
V_SSPCLAMP (3.47V) and VREF_TRK ≥0.3V to
PGOOD HIGH when DE mode is selected
(DE/PHDRP = VCC or FLOAT)
0.06
0.5
1
µA
0.4
V
ms
PGOOD Rising Delay (CCM mode)
The PGOOD rising delay from V_SSPIN =
100
ms
V_SSPCLAMP (3.47V) and VREF_TRK ≥0.3V to
PGOOD HIGH when CCM mode is selected
(DE/PHDRP = GND)
PGOOD Falling Blanking Time
10
µs
ADDR1, ADDR2, HIC/LATCH, ATRK/DTRK PIN DIGITAL LOGIC INPUT
Input Leakage Current
EN <1V
-1
1
µA
Input Pull-Down Current
EN >2V, Pin Voltage = 2.1V
0.7
1.0
2.0 µA
Logic Input Low
0.8
V
Logic Input High
2.1
V
DE/PHDRP PIN DIGITAL LOGIC INPUT (HIGH/LOW/FLOAT)
Input Leakage Current
-1
1
µA
FLOAT Impedance - PIN to VCC
PIN = GND
100
200
300 kΩ
FLOAT Impedance - PIN to GND
PIN = VCC
100
200
300 kΩ
Output Voltage on FLOAT Pin
PIN = FLOAT
2.1
2.6
2.7
V
Tri-State Input Voltage MAX
3
V
Tri-State Input Voltage MIN
1.8
V
Logic Input Low
PIN voltage falling
0.7
V
Logic Input High
PIN voltage rising
VCC -
V
0.4
TRACK PIN - DIGITAL INPUT LOGIC
Input Leakage Current
Input Pull-Up Current
Input Pull-Up Current Compliance Voltage
EN <1V, pin voltage = 5V, V_CC = 0V
EN >2V, pin voltage = 0V, V_CC = 5V
EN >2V, pin open
-1
1
µA
0.8
1.1
1.5 µA
2.5
V
Logic Input Low
PIN voltage falling
0.8
V
Logic Input High
PIN voltage rising
2
V
Duty Cycle Conversion (FB accuracy)
0% duty cycle input, measure at the FB pin
0
V
25% duty cycle input, frequency = 400kHz, 0.600 0.625 0.650 V
measure at the FB pin
50% duty cycle input, frequency = 400kHz, 1.218 1.253 1.288 V
measure at the FB pin
60% duty cycle input, measure at the FB pin 1.45
1.49
1.53 V
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FN8656.3
February 12, 2016